We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-07 · 8 min read · Independent comparison
If you want a single neckband-style set of waterproof sports earphones that you can wear all day and hand to an older child without worrying about a charging case going missing, choose Otium Headphones; if you need true wireless earbuds with ear hooks, a charging case, and the longest possible battery life for children who run, jump and sweat through every session, choose Hupoaf Earbuds Sport. That's the short version. The longer version comes down to two very different designs that both happen to carry an IPX7-style waterproof rating, and which one is right depends entirely on how your kid actually wears and loses things.
• Otium Headphones — biggest strength: A neckband in-ear design with a one-piece build, IPX7 waterproofing, up to 15 hours of playtime and Bluetooth 5.1/5.3 connectivity — nothing to lose because there's no separate case.
• Otium Headphones — biggest trade-off: It's a neckband, not a charging-case earbud set, and the sheet lists adult as the intended age range, so it isn't marketed specifically for kids.
• Hupoaf Earbuds Sport — biggest strength: True wireless earbuds with soft silicone ear hooks, Bluetooth 5.4, 4 ENC noise-cancelling mics, 10 hours per charge and a total of 50 hours with the charging case, plus an IP7 waterproof rating.
• Hupoaf Earbuds Sport — biggest trade-off: Two loose buds plus a case means more small parts to keep track of, which matters for younger children, and the sheet also lists adult as the age range.
• Who each pick is for: Otium Headphones suits a child who needs one grab-and-go piece for gym class, running and cycling. Hupoaf Earbuds Sport suits a child who wants long battery life, a case, and true wireless freedom for high-intensity sport.
Otium Headphones are built around a neckband. The earbuds are joined by a band that sits behind the neck, secured by ergonomic ear hooks, and the whole thing weighs about 18 grams. In practice that means one object to put on and one object to put away — there is no charging case, no pairing ritual with two separate buds, and no risk of one earbud disappearing into a school bag. For a child who is rough on gear, that single-piece design is the whole argument. The IPX7 waterproof rating comes from a sealed shell plus a nano-coating, and the brand explicitly frames it as protection against sweat and rain during running, hiking, cycling, fitness and yoga — with the honest caveat that it is not intended for swimming. For a child doing PE, football practice or a rainy walk home, that is exactly the right level of protection.
The audio side is a single 11mm dynamic driver covering 20 Hz to 20,000 Hz, tuned for bass, with sound isolation rather than active noise cancellation. Playtime is quoted at up to 15 hours on a full charge, with a standby figure of up to 250 hours, and the battery status shows up on an iOS phone screen. Controls are touch-based with volume control, so a child can skip tracks, pause and take calls without pulling out a phone. Bluetooth range is listed at 10 meters. Four sizes of silicone ear caps are included, which is genuinely useful when you are fitting a child's ears rather than your own.
Who should buy it: a parent or older child who wants one durable, waterproof, long-running pair for sport and everyday use, and who values not having to manage a charging case. Who should skip it: anyone who specifically wants true wireless buds with no band at all, or a child who finds a neckband uncomfortable during high-intensity movement. My honest take is that the neckband is the feature — if you don't want it, this isn't your product.
Hupoaf Earbuds Sport take the opposite approach: two independent buds held in place by soft silicone ear hooks, plus a charging case. The hooks are the headline for children, because they are the reason a bud stays put during running, jumping and general roughhousing. The fit is described as non-slip, and the silicone is soft enough that long wear shouldn't dig in — which matters when a child wears them for a whole training session rather than a twenty-minute jog.
The spec sheet is where this set separates itself for sport. Bluetooth 5.4 is the newer standard here, with a listed range of 20 meters. Each bud runs about 10 hours, and the case adds enough for a total of around 50 hours, with the case itself holding roughly 40 hours of charge. A 1.5-hour USB-C charge refills everything. There are 4 ENC noise-cancelling microphones, which the brand ties directly to call clarity in noisy places like a gym — that is the feature that makes these work as a kids' headset for video calls and online lessons as well as for music. The IP7 waterproof rating is described as resisting sweat, rain and short-term immersion. Controls are touch-based, and the case has an LED display showing power and charging status, which is a small but genuinely handy thing when a child is responsible for their own charging.
The included accessories are sensible: the case, two earbuds, three pairs of earplugs in S, M and L, a USB-C cable and a manual. The warranty is stated as one month return for quality problems plus a two-year warranty, and the brand advertises 24/7 support.
Side-by-Side: Which Should You Choose?
• Best for battery life overall → Hupoaf Earbuds Sport. 10 hours per charge and roughly 50 hours with the case beats Otium's 15-hour single-charge figure once you factor in recharging from a case.
• Best for a child who loses things → Otium Headphones. One neckband, no case, no second bud to misplace.
• Best for high-intensity sport → Hupoaf Earbuds Sport. The soft silicone ear hooks are designed specifically for running and jumping, and Bluetooth 5.4 plus a 20-meter range gives more headroom.
• Best for calls and online lessons → Hupoaf Earbuds Sport. 4 ENC mics aimed at clear voice pickup in noisy rooms is the stronger setup; Otium offers a built-in mic with voice notification of incoming calls, which is simpler but less targeted.
• Best for a one-piece, grab-and-go routine → Otium Headphones. Neckband design, ear hooks, four ear-cap sizes, touch controls and up to 15 hours without any case management.
• Best waterproofing flexibility → a tie in practice. Both are rated for sweat and rain, and Hupoaf's sheet additionally mentions short-term immersion, but neither is presented as a swimming product.
• Best for interface convenience → Hupoaf Earbuds Sport. The LED display on the case shows power and charging status, so a child can see at a glance whether they need to plug in.
• Best for warranty confidence → Hupoaf Earbuds Sport. The sheet lists a one-month quality return plus a two-year warranty, against Otium's stated one-year warranty.
If I were buying for a child who does organised sport, I would pick Hupoaf Earbuds Sport. The ear hooks are the deciding factor: for children, a bud that stays in during a sprint is worth more than any other feature, and the 50-hour total battery life plus the LED charging case means less nagging about cables. The 4 ENC mics also make them a better all-rounder for calls and online classes. I would only switch to Otium Headphones if the child is prone to losing small items, or if you want one rugged neckband that lives in a sports bag and never needs a case. Either way, check the current price on Amazon before you commit, since that is the one thing a spec sheet can't tell you.
are headphones waterproof
Not automatically — it depends on the rating. Otium Headphones carry an IPX7 waterproof rating using a sealed shell and nano-coating, and Hupoaf Earbuds Sport are listed as IP7 waterproof, resisting sweat, rain and short-term immersion. Neither brand presents its product as suitable for swimming.
are headphones water resistant
Both of these are, and to a fairly high degree. IPX7 and IP7 both indicate protection against water ingress well beyond simple splash resistance, which is why both brands position them for running, cycling and training in the rain. The practical limit for both is prolonged underwater use, which is outside what the sheets describe.
Both products here are in-ear designs with ear hooks, not on-ear headphones, so the real choice is neckband versus true wireless. The Otium neckband keeps everything in one piece, while the Hupoaf ear-hook buds sit independently and come with a charging case. For children, I would weigh "can they keep track of two small buds" more heavily than any audio difference.
It's worth checking. Otium Headphones quote up to 15 hours of playtime on a single charge with up to 250 hours standby. Hupoaf Earbuds Sport quote about 10 hours per charge and roughly 50 hours total with the case, refilled in about 1.5 hours by USB-C. A weekly training schedule is comfortably covered by either.
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