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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want a safer, longer-lasting pair of earbuds built specifically for kids, choose Belkin SoundForm Nano 2; if you need modern Bluetooth 5.4 with swipe-based touch control for an adult everyday listener, choose Biyoso 5.4.
• Belkin SoundForm Nano 2 — biggest strength: a kid-first design with an 85dB volume limiter, 28 hours of total battery life, Bluetooth 5.3, IPX5 water resistance, and Environmental Noise Cancellation for clearer calls.
• Belkin SoundForm Nano 2 — biggest trade-off: it is built for children ages 7+, so adults who want the newest Bluetooth version or a stem-style control scheme will find it limited.
• Biyoso 5.4 — biggest strength: Bluetooth 5.4 for stable, low-dropout connectivity, plus stem-based touch control that lets you swipe for volume and press to play, pause or mute.
• Biyoso 5.4 — biggest trade-off: roughly 4.5 hours per charge and about 20 hours total is a fraction of the Belkin's runtime, and the passive noise cancellation is simpler than the Belkin's ENC setup.
• Who each pick is for: the Belkin is for parents buying for a child; the Biyoso is for an adult who wants current Bluetooth and fingertip control on the stem.
The SoundForm Nano 2 is unapologetically a kids' product, and that is exactly where it wins. The headline number is the 85dB volume limiter — a responsible maximum listening level designed to protect young ears during long streaming or gaming sessions. If you have ever watched a child crank the volume on a pair of adult earbuds, you already understand why that single spec matters more than almost anything else here.
Around that core safety feature, Belkin builds a genuinely practical package. You get 8 hours per earbud and 20 more in the case, for 28 hours total — enough to cover a school day, the ride home and an evening of play without a recharge. When time is short, 10 minutes on the USB-C cable returns about 90 minutes of playback. Bluetooth 5.3 holds a connection within roughly 30 feet, which is plenty for pairing with a laptop, tablet or phone around the house. Environmental Noise Cancellation works on calls so parents can hear their kids more clearly, and IPX5 resistance means sweat and splashes are not a problem. The antimicrobial ear tips and drop- and spill-tested construction are the kind of details that only make sense once you have handed electronics to a seven-year-old.
Who should buy it? Parents or guardians shopping for a child around age 7 and up who needs earbuds for school, travel and everyday listening — and who value a hard volume ceiling over audiophile tuning. Who should skip it? Adults who want the latest Bluetooth generation, a stem-style control layout, or the louder, more open feel of a semi-in-ear fit. For grown-up everyday listening, the Biyoso is the more natural fit.
The Biyoso 5.4 leans into connectivity and control. Its TWS Bluetooth 5.4 chip is the newest wireless standard in this comparison, and the pitch is straightforward: a more stable link with fast transmission and no signal loss or music dropouts. For someone who has fought with stuttering audio on an older pair, that is the spec that sells this product. The built-in mic is positioned for hands-free calling, sport and work, and the manufacturer describes the stereo call and audio quality as clear.
The control scheme is the other draw, and it is genuinely more elaborate than the Belkin's. Control lives on the stem: swipe up or down to change volume, press to play or pause, press to mute or unmute yourself on a call, press twice to end a call, and hold the stem to switch listening modes. If you like the idea of never pulling your phone out mid-run or mid-commute, that layout is appealing. The semi-in-ear design is described as comfortable and non-destructive to sound quality, and both the earbuds and the case carry IPX5 dust, sweat and water resistance.
The trade-offs are real. Battery life is the big one — about 4.5 hours per charge at 80% volume, roughly 3 hours of call time, and a case that recharges the buds about three times for around 20 hours total. Standby is a generous 60 hours, and a full case charge takes about 1.2 hours, but heavy daily listeners will be reaching for the cable far more often than with the Belkin. Noise control is passive only, and the intended audience is adults, not children — there is no volume limiter here. The carrying case is on the heavier side at 55.5g, though the buds themselves are a featherweight 4.26g each.
Who should buy it? Adults who want current Bluetooth 5.4, stem-based touch control and a light, semi-in-ear fit for commuting, working out or hands-free calls. Who should skip it? Parents buying for a young child, and anyone who wants to charge once and forget about it for days.
• Best for kids and safe listening → Belkin SoundForm Nano 2. The 85dB limiter is the deciding factor; the Biyoso has no equivalent.
• Best for battery life → Belkin SoundForm Nano 2. 28 hours total versus roughly 20, plus a 10-minute fast charge for 90 minutes of play.
• Best for the newest Bluetooth → Biyoso 5.4. Bluetooth 5.4 versus 5.3, with the focus on stable, dropout-free transmission.
• Best for control flexibility → Biyoso 5.4. Swipe-to-adjust volume, single press for play/pause and mute, double press to end calls, hold to change listening modes.
• Best for clear calls with background noise → Belkin SoundForm Nano 2. Environmental Noise Cancellation is an active feature; the Biyoso relies on passive isolation.
• Best for a light, semi-in-ear fit → Biyoso 5.4. The buds weigh just 4.26g each and use a semi-in-ear shape.
• Best for durability around water and sweat → a tie. Both are rated IPX5, so splashes, sweat and light rain are covered on either.
• Best for a warranty cushion → Belkin SoundForm Nano 2. It carries a 2-year manufacturer limited warranty versus 1 year for the Biyoso.
If I were buying for a child, I would pick the Belkin SoundForm Nano 2 without hesitation. The 85dB limiter, the 28-hour battery, the 10-minute fast charge and the 2-year warranty add up to a package that is designed around how kids actually use earbuds. For an adult who wants Bluetooth 5.4 and stem-based touch control for commuting, workouts and calls, I would choose the Biyoso 5.4 — just go in knowing you are trading battery life and active noise cancellation for newer connectivity and a more flexible control scheme. In my opinion, the right answer here is decided by who is wearing them, not by which spec sheet looks longer.
Touch control means you operate playback and calls by tapping, pressing or swiping the earbud itself instead of using physical buttons. On the Biyoso 5.4, for example, you swipe the stem to change volume, press to play or pause, and double press to end a call. The Belkin SoundForm Nano 2 also uses touch control, with volume control among its touch functions.
Whether you can turn touch control off depends entirely on the model — some earbuds offer a companion app or a lock setting, and others have no way to disable it at all. Neither data sheet here lists an on/off toggle for touch control, so treat that as a feature to verify with the brand before buying if accidental taps are a dealbreaker for you. The practical workaround most people use is simply handling playback from the phone instead.
Because the earbuds are paired over Bluetooth and are designed to send commands back to the device — that is the whole point of touch control. A tap, press or swipe on the bud registers as a media or call command, which is why playback pauses or a call ends when you touch the stem. If it feels like the headphones are acting on their own, it is usually an accidental touch rather than a fault.
The Belkin SoundForm Nano 2 gives 8 hours per earbud plus 20 in the case, for 28 hours total, and 10 minutes of USB-C charging returns about 90 minutes of play. The Biyoso 5.4 gives about 4.5 hours per charge and roughly 20 hours with the case, with a full case charge taking about 1.2 hours. For long, uninterrupted days, the Belkin has the clear edge.
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