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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 rugged, swim-ready bone conduction headphone with built-in music storage, choose Monster Open Ear BC300; if you need a lightweight clip-on pair with a charging case and AI call clarity for all-day work and commuting, choose Xoruezls Open Ear Earbuds.
• Monster Open Ear BC300 — biggest strength: IPX8 waterproofing plus 32GB of onboard memory, so you can swim and train without a phone. Biggest trade-off: it uses Bluetooth 5.0 (the sheet lists "bluetooth version: 5") and has no charging case, just a 10-hour battery.
• Xoruezls Open Ear Earbuds — biggest strength: a clip-on, weightless fit with a charging case that adds up to 32 extra hours. Biggest trade-off: it isn't built for submersion, and its battery life per charge is shorter at 8 hours.
• Who the Monster is for: swimmers, trail runners and anyone who wants their music on the device itself.
• Who the Xoruezls is for: commuters, office workers and casual joggers who want comfort first and a case in their bag.
• Quick call: pick Monster for water and durability; pick Xoruezls for all-day comfort and call clarity.
The Monster Open Ear BC300 is a bone conduction sport headphone with a very specific personality. Sound travels through your cheekbones, which keeps your ear canals open — that's the whole point of this design. You hear traffic, footsteps and conversations while your music plays, which matters if you run or cycle near roads. The silicone open-ear enclosure sits outside the ear rather than jammed inside it, so ear fatigue is less of a factor on long sessions.
Where it pulls ahead of most open-ear rivals is water. The IPX8 rating means it handles heavy sweat, rain and even temporary submersion — the spec sheet says up to 2 meters for up to 2 hours, and the built-in microphone carries the same IP68 protection. That's a genuinely rare combination. Pair that with 32GB of built-in storage and you get a headphone that works with no phone at all: load thousands of songs, leave the handset in your locker, and swim or lift wire-free.
Buy it if you swim, sweat hard, or want your music stored on the device. Skip it if you mostly take calls in an office and want a pocketable case.
Xoruezls Open Ear Earbuds: Who It's For
The Xoruezls Open Ear Earbuds take the opposite approach. This is a clip-on design — two buds that hook over the ear with a soft, flexible clip that adapts to ear shape. The brand's own copy claims 9 out of 10 users forget they're wearing them, and while that's marketing language rather than something I can verify, the design logic holds up: no ear-canal insertion, no cartilage pressure, natural airflow. If you've ever given up on earbuds because they hurt after an hour, this is the category built for you.
The audio side is interesting for the size. Xoruezls lists 16.3mm dynamic drivers with a 32-ohm impedance, 105dB sensitivity and a 20Hz frequency response, plus 60ms latency. That's a large driver for a clip-on, and it points to fuller bass than you'd expect from something this light. The mics use AI noise filtering — the brand claims it cuts 98% of background hum — which is why this pair leans toward calls and meetings rather than swimming.
Battery is where the two products diverge most. Xoruezls gives you 8 hours per charge and a charging case that adds another 32 hours, with fast charging that returns 2 hours of playtime from a 10-minute top-up. Charging the buds takes 2 hours. Bluetooth is 5.4 with a 33-foot range, and controls are touch-based. The case is a modest 6 x 4 x 3 inches and 14.2g, so it disappears into a bag.
What it doesn't offer: any waterproof rating beyond the IPX7 mention in its marketing, no built-in storage, and no app-based controls. It's a daily-life headphone, not a pool headphone.
Buy it if you want comfort, long total battery via the case, and clear calls. Skip it if you swim or want music stored on the buds themselves.
• Best for swimming and heavy sweat → Monster Open Ear BC300. IPX8 with submersion up to 2 meters for up to 2 hours, plus a waterproof mic.
• Best for all-day comfort → Xoruezls Open Ear Earbuds. Clip-on fit, no ear-canal pressure, and a case that keeps them topped up.
• Best for total battery life → Xoruezls Open Ear Earbuds. 8 hours per charge plus roughly 32 hours in the case beats a single 10-hour charge.
• Best for phone-free workouts → Monster Open Ear BC300. 32GB of onboard storage means no handset required.
• Best for calls and meetings → Xoruezls Open Ear Earbuds. AI noise-filtering mics and Bluetooth 5.4 with a 33-foot range.
• Best for newer Bluetooth → Xoruezls Open Ear Earbuds. Version 5.4 versus 5.0 on the Monster.
• Best for touch controls → Xoruezls Open Ear Earbuds. Touch control on the buds; the Monster relies on an app.
• Best for running and cycling awareness → either. Both are open-ear, so both keep you tuned into your surroundings.
In my opinion, the Monster Open Ear BC300 is the one I'd buy. IPX8 waterproofing plus 32GB of built-in storage is a combination almost nothing else in the open-ear space offers, and it opens up swimming and phone-free training in a way the Xoruezls simply can't match. The Xoruezls is the better everyday companion — lighter, longer total battery, newer Bluetooth and stronger call features — but it's a comfort-and-commute product, not a durability product. If your priority is surviving water and sweat, go Monster. If your priority is wearing something all day and taking calls, go Xoruezls. Check the current price on Amazon before you decide, since that's the one variable that could flip this call for you.
how to bone conduction headphones work
Bone conduction drivers vibrate and send sound through your cheekbones straight to the inner ear, bypassing the eardrum and ear canal. That's why the Monster Open Ear BC300 can keep your ears fully open to traffic and conversation while music plays. The Xoruezls uses the same open-ear principle with its clip-on design.
how to wear bone conduction headphones
Rest the transducer against your cheekbone just in front of the ear, with the band or clip hooking over the top. The Monster sits outside the ear with a silicone open-ear fit; the Xoruezls clips over the ear with an adjustable grip. Neither goes inside your ear canal.
how to use bone conduction headphones
Power on, pair over Bluetooth, then play from your phone. The Monster also lets you load songs into its 32GB of built-in storage and listen with no phone at all — useful for swimming, since Bluetooth doesn't travel through water. The Xoruezls pairs over Bluetooth 5.4 with touch controls on the buds.
how to wear bone conduction headphones for swimming
You need an IPX8 rating and onboard storage, because Bluetooth won't work underwater. The Monster Open Ear BC300 meets both: it's rated for submersion up to 2 meters for up to 2 hours and holds thousands of songs internally. The Xoruezls is not designed for swimming.
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