ISINWHEEL S2 vs JETSON Relay - Which Kid's E-Scooter Actually Deserves Your Money?

Fast Answer for Busy Riders ⚡ (TL;DR)

The ISINWHEEL S2 is the better all-round kids' scooter: it feels more like a "real" little vehicle, offers longer playtime, smarter safety touches, and generally just feels better thought out for everyday use. The Jetson Relay is lighter on its feet and very approachable, but its short real-world range, weak hill performance, and spotty longevity make it harder to recommend unless you grab it at a big discount and live somewhere very flat.

Pick the S2 if you want a sturdier, more grown-up feeling first e-scooter that can genuinely grow with your child. Pick the Relay if your priority is ultra-light weight, quick trunk duty, and you're okay treating it more like an electric toy with limited outings rather than a mini-commuter.

If you want the full story, the real riding impressions, and the trade-offs that don't fit on the box, keep reading.

Electric scooters for kids used to mean "cheap plastic with a noisy chain and a battery that dies by October". Not anymore. Today's entry-level kids' e-scooters are closer to shrunken adult machines, and the ISINWHEEL S2 and Jetson Relay are two of the most visible names in that space.

I've put real kilometres on both with actual kids, actual pavements, and very real parents watching anxiously from the kerb. One is pitched as a sleek, light-up "first real scooter" with grown-up features shrunk down. The other is the poster child of big-box electric fun: simple, approachable, and very easy to throw in the car.

The S2 is for parents who want a kid's scooter that feels like a tiny, serious vehicle. The Relay is for families who just want a lightweight, easy gift that's fun around the cul-de-sac and don't expect more.

The spec sheets don't tell the whole story - especially for kids' machines. So let's dig into what they're actually like to live with.

Who Are These For, and Why Compare Them?

Both scooters live in that "birthday-present price" bracket: not cheap enough to be an impulse buy, but far from premium adult territory. They're aimed squarely at kids who have mastered a kick scooter and are ready to graduate to electric - roughly primary school to early teens, depending on size and weight.

The ISINWHEEL S2 targets a slightly wider age and size range, from small kids just getting their balance sorted through to lighter early teens. It feels more like a mini version of an adult scooter, with a more serious frame, multi-height stem and proper control layout.

The Jetson Relay, by contrast, is very much a pre-teen toy that happens to use adult-style components. It's tuned for kids in the middle of that age bracket, and while the weight limit looks respectable on paper, performance clearly favours smaller, lighter riders on very flat ground.

Why compare them? Because if you're a parent standing in the aisle (or scrolling online) with roughly this budget in mind, these two will pop up again and again - both promising safety, light weight, fun speeds and "perfect first e-scooter" vibes. On paper, they look very close. On the pavement, less so.

Design & Build Quality

Pick up the ISINWHEEL S2 and you immediately get that "mini vehicle" impression. The aluminium frame has a reassuring heft for its size, the folding joints feel decently tight, and nothing rattles embarrassingly when you bounce the front wheel. The cables are not fully hidden, but they're reasonably tidy. The overall aesthetic is very kid-friendly: metallic finish, lots of lighting, but still closer to a proper scooter than a toy.

The Jetson Relay, on the other hand, looks like it was designed to sit on a Costco pallet and scream "take me home". Clean lines, simple frame, and colourways that range from stealth to camo. The aluminium chassis keeps it featherlight, and the folding stem feels fine for the price. Up close, though, the cost cutting shows: thinner metal tubing, more hollow feel, slightly cheaper plastics around the bar and throttle. Nothing catastrophic, but side-by-side the S2 feels more solid in the hands.

Detailing is where the gap widens. The S2's magnetic charging port is the sort of small, parent-friendly touch that tells you someone actually imagined an 8-year-old plugging this in every day. The Relay sticks with a conventional charge port and proprietary charger that you really don't want to misplace. The S2's lighting integration also feels more deliberate; the Relay has a proper headlight, but the rest of the scooter is visually more subdued.

If you want the scooter that feels like it'll shrug off a few years of being dumped on driveways and bounced in and out of hatchbacks, the S2 has the edge. The Relay doesn't feel flimsy, but you are more aware you're holding something built to a strict cost target.

Ride Comfort & Handling

Both scooters share a simple recipe: small solid wheels, no suspension, light frames. Translation: on smooth park paths they glide, on rough old pavements they remind you why adults pay for big tyres and shocks.

The ISINWHEEL S2 rolls on smaller wheels than the Relay, and you do notice that in how fussy it can be about larger cracks and dodgy curb cuts. Teach kids early to lift the front wheel slightly over gaps, and they'll be fine, but you can feel the scooter "hang" more easily in bigger joints. On clean concrete, though, the S2 is surprisingly composed. The deck is a touch wider and gives kids a more natural, slightly staggered stance, which helps with balance and comfort over longer rides.

The Relay's slightly larger wheels help a bit with stability at its modest speeds, but they don't rescue it from the reality of solid rubber and stiff frame. On fresh tarmac it feels light and flickable, almost playful. Start stringing together older slabs of pavement and brickwork and the vibrations travel directly up the stem into small hands. The narrower deck also forces a more fixed stance; as kids grow, some start wishing for a little more real estate underfoot.

Handlebar feel is decent on both. The S2's grips are softer and more kid-sized, which kids appreciate after a longer loop of the neighbourhood. The Relay's rubber is harder but secure. In terms of steering, both are stable at their limited top speeds; neither feels twitchy, but the S2's slightly more planted stance wins when a nervous beginner hits a rough patch, whereas the Relay's extra lightness makes it easier to over-correct if they panic.

After a good few kilometres of mixed pavements, if I had to stick one under a child's feet for a longer outing, I'd lean toward the S2 - not because it's plush (it isn't), but because the wider deck and ergonomics let kids stay comfortable just that bit longer.

Performance

Let's be clear: neither of these is going to blow anyone's socks off. They're both limited to kid-appropriate speeds, and that's a good thing. The difference is how confidently they get there, and what happens when the ground tilts upwards.

The ISINWHEEL S2 has the slightly stronger motor, and you can feel it. With a typical primary-school rider, it eases up to its top speed without drama, but there's enough shove that the scooter doesn't feel like it's gasping for air every time the child nudges the throttle. Acceleration is intentionally smooth rather than explosive; you get a gentle push instead of a sudden yank, which is exactly how it should be for a first e-scooter. Modest slopes are handled with quiet competence - driveways, gentle park inclines, that sort of thing. Steeper hills still reduce it to more of a "kick-assist", but you don't end up walking quite as often.

The Relay, with its tamer motor, is much more sensitive to rider weight and terrain. With a lightweight eight-year-old on dead-flat ground, it feels fine: it hums up to its limited top speed and cruises along happily. Add a few kilos or a mild incline and suddenly you're watching the speed bleed away. I've had kids hit a very ordinary suburban hill, watch the motor give up halfway, and instinctively start kicking like it's a normal scooter. For some that's just part of the fun; for others it's the moment they decide this scooter is "slow".

Throttle behaviour also differs. The S2's finger dial allows a bit of fine control; kids can actually feather their speed in crowded areas once they learn the feel. The Relay's thumb throttle is more of a three-step ladder matched to its speed modes: you pick a mode, and the scooter does its thing. Safe, yes, but a little more binary in practice.

Braking on both is sensible for young riders: an electronic brake on the bar plus a good old-fashioned rear foot fender. The S2's electronic braking feels slightly more progressive - you slow firmly but without the abrupt "nose dip" some cheap kids' scooters inflict. The Relay's e-brake is adequate but can feel a bit more sudden at its highest mode, especially when smaller hands grab a handful in panic. Both foot brakes are familiar and confidence-inspiring; most kids instinctively go for them first.

If your local world is mostly flat and your child light, both will "do the job". If there's any real variation in terrain, the S2's extra motor grunt is the difference between cruising and constant complaining.

Battery & Range

Range is where the two part ways quite dramatically in real use.

On the ISINWHEEL S2, the battery is small by adult standards but fairly generous for a kids' scooter. Under ideal lab conditions the claimed distance is optimistic, of course, but in the real world you're broadly looking at about an hour of continuous play for a typical youngster: loops around the park, detours through the estate, quick sprints to a friend's house and back. You notice the power tapering a bit as the battery gets low, but you're not suddenly limping home after ten minutes. And when the juice finally ends, the scooter is light enough and rolls easily enough to be used as an unpowered kick scooter without too much sulking.

The Relay, by comparison, is more of a short-burst machine. On a good day with a light rider and flat ground, its tiny battery can just about cover a small there-and-back adventure. But start adding hills, heavier kids, cooler weather or lots of stop-start, and you see the battery gauge drop far faster than parents expect from the box claims. Half an hour of enthusiastic riding can drain it to the point you're back in kick-scooter mode. Kids (and parents) do notice that, and the word "disappointed" pops up in owner feedback more often than you'd like.

Charging is another contrast. The S2 goes from empty to full in a few hours - your child can run it down in the morning, plug it in over lunch, and reasonably expect another good session later in the day. The Relay, despite its smaller battery, takes noticeably longer to replenish. Drain it completely before lunch and, realistically, it's sitting out the rest of the day. Add in the not-uncommon reports of batteries sulking or dying after a winter of being left discharged, and the S2 simply feels like the more forgiving, family-friendly partner.

If your vision is "ride for a while, charge, ride again", the S2 plays along nicely. The Relay is more "short joyride, long nap".

Portability & Practicality

Here the Relay finally lands a solid hit back.

Both scooters are very light by e-scooter standards, but the Relay is almost comically easy to grab and go. Kids can lift it, swing it into the boot, carry it up a flight of stairs to an apartment. The folding stem tucks neatly against the deck, creating a tidy little package that fits under a desk or in a crowded hallway without drama. If your life involves frequent car trips and you want a scooter that can live in the boot without being noticed, the Relay is genuinely excellent.

The S2 is hardly a heavyweight - far from it - but you do feel that little extra substance. Still easily carryable for a 10- or 12-year-old over short distances, yet less "feather" and more "light tool". The folding mechanism is straightforward and secure; even older kids can manage it after a quick lesson. Folded, it's compact enough to stash under a bed or stand in a corner. You're not wrestling with either of these.

Where the S2 claws back practicality points is in the details. The magnetic charger connection means less fiddling, less chance of bent pins, and happier parents. Its slightly broader comfort envelope and better range also make it more practical as an actual transport tool - to the bus stop, across the estate, to grandma's and back - not just as a driveway toy.

If your main priority is "the kids can carry it themselves" and it lives in the car, the Relay is a tiny bit easier to live with. If you want something that's almost as portable but better suited to daily use and less fussy around charging, the S2 wins.

Safety

On the fundamentals, both scooters tick the right boxes: conservative top speeds, kick-to-start throttles so they don't shoot off from a standstill, and dual braking systems that combine an electronic brake on the bar with the familiar rear foot brake.

The ISINWHEEL S2 adds a layer of seriousness with its safety certification for the electrical system. For a device that will be charged indoors, that's not just marketing fluff - it's peace of mind. The dual braking is tuned well; the electronic brake doesn't grab too hard, and the scooter remains stable even when a nervous child clamps down on it. Grip on the deck is solid, and the whole chassis just feels that bit more confidence-inspiring at its modest speeds.

The Relay matches the overall concept - e-brake plus foot brake, grippy deck, kick-to-start - and throws in a proper headlight, which is rare in this class. Visibility from the front is good, which helps in gloomy late afternoons. However, the scooter's tiny wheels and lower power mean it's more likely to stall or slow dramatically on cracks and slopes, which can catch less experienced kids off guard. Traction on wet surfaces with those hard solid tyres is, frankly, not great; you really don't want them riding this in the rain anyway.

In terms of passive safety, the S2's extensive deck and wheel lighting make kids genuinely stand out in low light - drivers notice a moving neon strip long before they focus on a small child. The Relay relies more on its headlight and general visibility. Both are acceptable, but the S2 makes being seen part of the fun, which means kids actually keep it switched on.

Overall, both are safe when used as intended, but the S2 feels like it's been engineered a little more from the "paranoid parent" perspective, while the Relay leans more on basic good practice and brand familiarity.

Community Feedback

Price & Value

On paper, the two scooters are priced almost on top of each other. In practice, they deliver different kinds of value.

The ISINWHEEL S2 gives you a sturdier chassis, better real-world playtime, nicer ergonomics, and thoughtful kid-centric touches like the magnetic port and rich lighting. It feels like something a child can use for several years, hand down to a sibling, and still have it feel like a "proper" scooter. You're not paying a premium for a brand name; you're paying for a package that punches a little above what you expect in this price band.

The Jetson Relay leans heavily on brand familiarity and initial sticker price. When heavily discounted, it looks very attractive: light, simple, recognisable logo, job done. But once you factor in the shorter usable range, anaemic hill performance and the not-rare battery/charger headaches over time, the apparent value erodes a bit. It's excellent value as a temporary "electric toy phase" machine; much less so if you're hoping for a long-lived mini-vehicle.

If you want the most "scooter" for your money, the S2 is ahead. If you catch the Relay in a big sale and fully accept its limitations, it can still make financial sense - but you do need to walk into it with your eyes open.

Service & Parts Availability

ISINWHEEL has built its name largely online, with a decent presence in Europe and reasonably straightforward access to spares like chargers and basic hardware. That alone puts it ahead of the army of anonymous kids' scooters out there. You're not dealing with a ghost brand; support may not be white-glove, but it's generally responsive enough for this price level, and spare parts aren't unicorns.

Jetson, by contrast, is everywhere in North America, less so in Europe. Their strength is retail presence and a huge user base; you'll find endless YouTube videos and forum threads of people fixing Relays in garages. Official support, however, gets mixed reviews - some parents sail through warranty claims, others hit a wall of emails and delays. Chargers and specific parts can be a bit of a treasure hunt this side of the Atlantic, especially once the model inevitably gets cycled out of big-box catalogues.

From a purely European perspective, the S2's support and parts pipeline currently looks the more reassuring of the two.

Pros & Cons Summary

Parameters Comparison

Final Verdict - Which Should You Choose?

If you strip away the brand recognition and the marketing gloss, the ISINWHEEL S2 comes out as the more complete little machine. It rides more like a scaled-down adult scooter, offers meaningfully more time on the road between charges, feels sturdier underfoot, and throws in genuinely useful kid-specific details that make everyday life easier. For a child who'll actually use their scooter regularly - to explore the neighbourhood, ride to the park, or simply burn off energy every afternoon - it's the safer bet.

The Jetson Relay has its charms: featherlight, highly portable, dead simple to use, and immediately likeable in a "birthday morning unbox" kind of way. On perfectly flat suburbia, for shorter outings, and especially if you snag it at a steep discount, it will absolutely delight the right kid. But the short legs on range, lacklustre power on inclines, and the pattern of battery and charging issues make it feel more like a seasonal gadget than a dependable sidekick.

So, if you're choosing one scooter to introduce your child to electric riding and you care about more than just the first two weekends of excitement, go for the ISINWHEEL S2. The Jetson Relay can still make sense as a fun, light toy for flat neighbourhoods - just don't expect it to pull double duty as a serious little vehicle.

Numbers Freaks Corner

These metrics compare how much you pay for energy capacity and speed, how efficiently each scooter turns battery into distance, how much weight you carry per unit of performance, and how quickly they refill their batteries. Lower is better for all the "per X" cost and weight numbers, while higher is better for power per speed and charging speed, since those indicate stronger performance and less time on the charger.

Author's Category Battle

Overall Winner Declaration

In the Numbers Freaks Corner, the ISINWHEEL S2 scores 7 points against the JETSON Relay's 3. In the Author's Category Battle, the ISINWHEEL S2 gets 30 ✅ versus 8 ✅ for JETSON Relay.

Totals: ISINWHEEL S2 scores 37, JETSON Relay scores 11.

Based on the scoring, the ISINWHEEL S2 is our overall winner. Between these two, the ISINWHEEL S2 simply feels more like a genuine, confidence-inspiring little scooter rather than a toy that happens to plug into the wall. It gives kids more time to ride, more composure under their feet, and parents fewer reasons to worry about whether it will still work next spring. The Jetson Relay has a certain lightweight charm and will absolutely light up a child's face on day one, but the S2 is the one that keeps delivering smiles week after week - and that, in the real world, matters far more than whatever's printed on the box.

That's our verdict when we try to stay objective – but hey, riding is mostly about emotions anyway, so pick the one that will make you look forward to your commute every single day.