We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-22 · 7 min read · Independent comparison
If you want an open-ear design that keeps your ears completely unobstructed while you run, choose Generic Bone Conduction Headphones; if you need deeper sound, longer total battery life and a secure in-ear fit for the gym, choose UPUNAIS Earbuds.
• Generic Bone Conduction Headphones — biggest strength: bone conduction drivers sit outside the ear canal, so you stay aware of traffic, training partners and your surroundings while the earpieces never block your ears.
• Generic Bone Conduction Headphones — biggest trade-off: no noise cancellation and no sealed fit, so bass feels light and loud environments will fight your music.
• UPUNAIS Earbuds — biggest strength: 12 mm dynamic drivers plus up to 50 hours of total playtime with an LED battery display on the case.
• UPUNAIS Earbuds — biggest trade-off: they seal inside your ear, which means you give up the ambient awareness that makes open-ear designs so useful outdoors.
• Who each pick is for: pick the Generic set if situational awareness and all-day comfort matter most; pick the UPUNAIS set if you want fuller audio, call clarity and long battery in a compact case.
This is the situational-awareness pick. The LL08 uses a bone conduction driver instead of a speaker aimed into your ear canal, so the earpieces rest against your cheekbones and leave your ears open. That single design choice shapes everything else about it. On a road run, a bike path or a busy trail, you hear cars, cyclists and voices without pulling a bud out — which is exactly why open-ear headphones have become a default for outdoor athletes. In my opinion, that transparency is the whole reason to buy this model.
The rest of the spec sheet backs up the workout angle. You get Bluetooth 6.0 for the wireless connection, a built-in mic for calls, and a rating of 10 hours of battery average life, which is genuinely useful for long training sessions or a full workday of background listening. IP65 means it handles sweat and water spray, so rain, heavy perspiration and post-run rinse-offs are not a concern. The frame is plastic, lightweight by design, and the ear placement is over-ear, which keeps the band stable on your head during movement. Controls are simple push buttons — no app, no touch panels, nothing to fumble with mid-stride.
Who should buy it: runners, hikers and cyclists who want music or podcasts while staying tuned into their environment; people who dislike the plugged-up feeling of in-ear buds; anyone who wants a single button-controlled headset with a full day of listening. Who should skip it: if you want deep bass, isolation on a noisy commute, or active noise cancellation, this is the wrong category. There is no noise control here at all, and an open design will always leak in the world around you. Also skip it if you need a compact pocketable case — this is a worn-on-the-head device, not something that disappears into a jeans pocket.
The UPUNAIS M145 is the immersive-audio pick. These are true in-ear buds with a flexible ear hook, so they sit inside the canal and lock onto the ear for a stable fit through running, lifting and gym sessions. The 12 mm dynamic drivers are the headline number here — that is a large driver for a bud, and larger drivers generally move more air, which is how you get the deep bass and full low end that open-ear designs struggle to produce. If your priority is how the music actually sounds rather than what you can hear around you, this is the more satisfying design.
Battery is the other big story, and it is worth reading carefully. The buds themselves are rated at 5 hours of average life, but paired with the charging case the total climbs to up to 50 hours. That is a genuinely long runway — enough that you can go days of workouts and commutes between charges. The dual independent LED display on the case shows remaining power for both the case and the buds, which removes the guesswork of "do I need to plug in tonight?" A full charge takes about 2 hours.
Around the edges, the M145 is set up for real-world use, not just the gym. ENC (Environmental Noise Cancellation) works on the microphone side to suppress background noise during calls, and the spec sheet lists a low audio latency of 0.1 ms plus a 10-meter Bluetooth range. Controls cover buttons, media, calls, voice and Siri, and there is app control as well. Frequency response reaches 20 kHz, impedance is 32 ohm, sensitivity is 115 dB, and the enclosure is silicone with a plastic case. It ships with an eartip. IPX4 covers sweat and light splashes — fine for hard training, but not for swimming or heavy rain exposure.
Who should buy it: anyone who wants bass-forward sound, long total battery life, clearer calls and a fit that survives burpees. Who should skip it: if you need to hear traffic while you run, or you dislike the sealed feeling of in-ear buds, the whole point of these works against you.
Side-by-Side: Which Should You Choose?
• Best for bass and immersive sound → UPUNAIS Earbuds. 12 mm dynamic drivers in a sealed in-ear fit produce low end the open design cannot match.
• Best for total battery life → UPUNAIS Earbuds. Up to 50 hours with the case versus 10 hours on a single charge from the Generic set.
• Best for a single long session → Generic Bone Conduction Headphones. 10 hours of continuous average life with nothing else to carry or recharge.
• Best for call clarity in noisy places → UPUNAIS Earbuds. ENC microphone processing is built specifically to suppress background noise on calls.
• Best for water and sweat exposure → Generic Bone Conduction Headphones. IP65 is a higher water-resistance rating than IPX4, so it shrugs off more spray and heavier sweat.
• Best for hearing your music and your environment at once → Generic Bone Conduction Headphones. That is the core trade of the open-ear design.
• Best for a compact, pocketable setup with a battery readout → UPUNAIS Earbuds. The case is small and the dual LED display shows charge levels at a glance.
If I had to pick one, I would buy the UPUNAIS Earbuds — but only because my priority is sound quality and battery life, and the 12 mm drivers plus the 50-hour total playtime with the case are the stronger package for that. The ENC calling and the LED battery display make it a better daily driver for commutes, calls and gym work. That said, the Generic Bone Conduction Headphones are the smarter buy if you run or ride near traffic and want to hear the world around you. In my opinion, the deciding question is simple: do you want your ears open or your music sealed in? Answer that and the choice makes itself.
FAQ
UPUNAIS wins on total runtime. The buds are rated at 5 hours on their own but up to 50 hours with the charging case, while the Generic Bone Conduction Headphones are rated at 10 hours of average life on a single charge with no case.
Yes — they use flexible ear hooks and an ergonomic in-ear shape, which the specs describe as a consistently secure fit for running, training and gym use. Just keep in mind the IPX4 rating covers sweat and light splashes, not submersion.
The Generic Bone Conduction Headphones carry an IP65 rating, which is more resistant to water and sweat than the IPX4 rating on the UPUNAIS Earbuds. If you train hard and sweat heavily or get caught in rain, the IP65 set is the more forgiving option.
I do not quote prices here because they change often — check the current price on Amazon using the button on this page. On features alone, the UPUNAIS set gives you more battery and more audio hardware, while the Generic set gives you open-ear awareness and a higher water-resistance rating.
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