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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want marathon battery life, a secure hook fit for hard workouts, and physical buttons you can find without looking, choose LEEMC Earbuds; if you need open-ear awareness so you can hear traffic and training partners while you run, choose Gelecek Bone Conduction Headphones.
• LEEMC Earbuds — biggest strength: Up to 80 hours of total playtime (15 hours per bud plus 65 hours from the charging case), which is the longest stamina figure in this comparison by a wide margin.
• LEEMC Earbuds — biggest trade-off: It's a sealed in-ear design with passive noise cancellation only, so it blocks your surroundings — a real downside on busy roads.
• Gelecek Bone Conduction Headphones — biggest strength: Open-ear bone conduction that leaves your ear canal free, so you stay aware of traffic, other runners and gym chatter while audio plays through your cheekbones.
• Gelecek Bone Conduction Headphones — biggest trade-off: A 10-hour single-charge battery with no charging case in the box, so long days mean planning a recharge.
• LEEMC Earbuds are for you if you want maximum battery, a locked-in hook fit and tactile button controls for the gym, treadmill or long training blocks.
• Gelecek Bone Conduction Headphones are for you if you run or ride outdoors and consider hearing your surroundings a safety feature, not a compromise.
The LEEMC Earbuds are built around stamina and fit security. Each bud is rated for up to 15 hours of playtime, and the charging case adds another 65 hours, for a total of up to 80 hours before you need a wall outlet. A 15-minute top-up gets you about 2 hours of use, and a full charge takes roughly an hour. In practice, that means you can leave the case at home for a week of gym sessions and never think about charging. The case itself is compact — about 3.56 x 2.33 x 1.36 inches and 66.8 g — with an LED display so you can see where the battery stands at a glance.
The design is all about staying put. Each earbud weighs only 0.3 oz and uses a hook shape with skin-friendly silicone and a titanium alloy core, so it flexes but doesn't deform. Three sizes of silicone tips (S/M/L, with M pre-attached) let you tune the seal and therefore the passive noise isolation. There are also dedicated physical buttons on each bud for volume, playback and voice assistant, which matters more than people expect: mid-run, pressing a real button beats swiping at a touch panel with sweaty fingers.
The audio hardware is a 14.2 mm dynamic driver, 32 ohm impedance, 115 dB sensitivity and a frequency response rated to 50,000 Hz, with Bluetooth 5.4 and a stated range of 10–15 meters. Latency is listed at 55 ms, which is fine for music and calls. Waterproofing is IPX7, so sweat and rain are not a concern. The one-year warranty and full accessory kit (case, USB-C cable, tips, manual) round it out.
Who should buy it: gym-goers, treadmill runners, lifters and anyone who wants to disappear into their audio for hours without charging anxiety. Who should skip it: outdoor road runners and cyclists who need to hear cars, and anyone who dislikes the plugged-in feeling of in-ear tips.
The Gelecek set takes the opposite approach: it doesn't go in your ears at all. Sound is delivered through your cheekbones via a bone conduction driver, which leaves your ear canal completely open. That's the entire point of the category. You hear your music or podcast and you also hear the car behind you, the cyclist calling out, the coach shouting splits. For anyone who has ever pulled an earbud out at every intersection, that's a genuine quality-of-life upgrade.
The frame is titanium and weighs 29 grams — light enough to forget you're wearing it, and flexible enough to bend and stretch without deforming, which matters if you stuff it in a gym bag. The listed waterproof rating is IP55, meaning it handles sweat and spray from running, hiking and cycling, though it isn't built for swimming or submersion. The open-ear shape also means no ear fatigue from tips pressing into your canal over long sessions, and no occlusion effect where your own breathing sounds loud in your head.
On battery, Gelecek lists up to 10 hours per charge with Type-C charging. That's a full day of commuting plus a workout, but it's a single-charge figure — there's no case adding reserve hours. Bluetooth is listed as 5.4 in the product information section (the title markets it as 6.0), and there's a microphone with noise cancellation for hands-free calls, which suits remote meetings and long calls as much as training. Sound leakage is reduced by up to 50% thanks to a fully enclosed cavity design, though some leakage at higher volumes is inherent to the technology.
Who should buy it: outdoor runners, cyclists, hikers, and anyone who wants situational awareness as a safety feature. It's also a good pick if you take a lot of calls while moving around. Who should skip it: anyone who wants deep bass isolation in a noisy gym, or who needs more than a single day of battery between charges.
• Best for battery life → LEEMC Earbuds. Up to 80 hours total versus 10 hours on a single charge. This isn't close.
• Best for outdoor safety → Gelecek Bone Conduction Headphones. Open-ear design keeps you aware of traffic and surroundings; the LEEMC's passive noise cancellation does the opposite.
• Best for gym and treadmill work → LEEMC Earbuds. The IPX7 rating plus hook-and-tip fit is built for sweat-heavy indoor sessions.
• Best for running, cycling and hiking → Gelecek Bone Conduction Headphones. IP55 sweat resistance, a 29 g titanium frame and open ears fit the outdoor use case exactly.
• Best for calls and meetings → Gelecek Bone Conduction Headphones. It has a dedicated mic with noise cancellation for hands-free calls; the LEEMC focuses on physical controls and playback.
• Best for long trips and travel → LEEMC Earbuds. The charging case means you can go days without an outlet.
• Best for comfort over long sessions → Depends on your ears. Gelecek avoids in-ear pressure entirely, while LEEMC's three tip sizes and 0.3 oz buds suit people who prefer a sealed fit.
• Best for hearing your surroundings → Gelecek Bone Conduction Headphones. That's its defining feature, not a side benefit.
If I had to pick one, I'd buy the LEEMC Earbuds — in my opinion, the 80-hour total playtime, IPX7 rating and physical buttons make it the more versatile everyday pair for gym, work and travel, and it simply asks less of you between charges. That said, I'd recommend the Gelecek Bone Conduction Headphones without hesitation to anyone whose workouts happen on open roads or trails. If awareness of your surroundings is non-negotiable, the open-ear design wins, and 10 hours is plenty for a training day. Buy based on where you'll wear them, not on which sounds more impressive on paper.
It's up to 80 hours total: about 15 hours per earbud plus 65 hours from the charging case. A 15-minute quick charge gives roughly 2 hours of use, and a full charge takes about an hour. That's the combined figure, not 80 hours in one continuous session.
No — that's the point. The open-ear design lets sound in so you stay aware of traffic and people around you. If you want isolation, the LEEMC Earbuds with their passive noise cancellation and three tip sizes are the better match.
The LEEMC Earbuds carry an IPX7 waterproof rating, which is the stronger of the two. The Gelecek set is rated IP55, which handles sweat and light spray but isn't intended for heavy soaking. For wet-weather running, I'd lean LEEMC.
Yes, both support calls. The Gelecek model specifically lists a microphone with noise cancellation for hands-free calls and remote meetings, while the LEEMC relies on its Bluetooth 5.4 connection and on-bud controls. For call-heavy days, the Gelecek is the more purpose-built option.
For all-round gym, travel and work use, I'd take the LEEMC Earbuds for battery and fit. For outdoor running and cycling where safety matters most, I'd take the Gelecek Bone Conduction Headphones. Check the current price on Amazon for each before deciding, since the value call depends on what you're paying today.
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