We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-04 · 6 min read · Independent comparison
If you want a lighter, more flexible open-ear headset with a titanium-alloy neckband that bends to fit almost any head, choose flymory Bone Conduction Headphones; if you need longer battery life, a newer Bluetooth version and a higher water-resistance rating for hard training, choose MZYDM Bone Conduction Headphones.
• flymory — biggest strength: a 360-degree bendable titanium-alloy neckband plus a secure ear-hook fit, so it adapts to different head and ear shapes and stays put during movement.
• flymory — biggest trade-off: IPX5 water resistance and Bluetooth 5.3, which are a step below what the MZYDM model offers, and battery life drops from 12 hours to about 8 hours when you push the volume up to 80%.
• MZYDM — biggest strength: 15 hours of stated playtime, Bluetooth 5.4, IPX6 sweat resistance and a 15mm bone conduction driver, which together suit long, sweaty sessions.
• MZYDM — biggest trade-off: button controls instead of touch, and a colour that is a bold orange rather than a neutral black.
• Pick flymory if fit, flexibility and a discreet all-black look matter most to you.
• Pick MZYDM if you train hard, sweat a lot and want the longest runtime and the newest wireless standard.
The flymory X7 is built around one idea: the headset should disappear on your head. The neckband is made of titanium alloy and can be bent through a full 360 degrees, so it can be shaped to different head sizes. The ear hooks are ergonomically angled to sit against the ear bones, and the open-ear design means the drivers rest outside the ear canal rather than inside it. That is the whole point of bone conduction — audio travels through the cheekbones, so your ears stay open to traffic, footsteps and conversation. If you ride a bike near cars or run on shared paths, that awareness is the feature you are really paying for.
The spec sheet describes Bluetooth 5.3 with a stable connection at up to 10 metres, plus a Type-C charging port and a two-hour full charge. Playtime is quoted at 12 hours at 50% volume, dropping to roughly 8 hours at 80%. That is an honest, usable range for commuting, gym sessions and podcast listening, and Type-C means you probably already own the right cable. At 29 g it is light enough to forget you have it on, and the touch controls keep the surface clean with no buttons to press.
In my opinion, this is the better pick for someone who has struggled to get open-ear headphones to sit properly — the bendable band is the standout detail here. The trade-offs are real, though. IPX5 handles sweat and light rain but not heavy downpours, and there is no active noise cancellation on either model. If you want maximum runtime or the newest Bluetooth generation, this is not the one.
The MZYDM A28 is the more endurance-focused of the two. It runs Bluetooth 5.4, which the spec sheet ties to faster pairing, lower latency and better power efficiency, and it quotes a 15-metre wireless range — five metres further than the flymory. The headline number is 15 hours of music and calls, and it also supports multi-point connection, so you can take a call on your phone while music pauses on your laptop. If you move between devices all day, that is genuinely useful.
Durability is the other half of the pitch. The rating is IPX6, which is a step up from IPX5 and is aimed squarely at sweat and wet weather — though the manufacturer is clear that it is not for swimming. The fully enclosed cavity is designed to keep moisture out of the driver housing. Audio comes from a 15mm bone conduction driver with 50 ohm impedance, 96 dB sensitivity and a 20 Hz–20 kHz range, and there is a built-in microphone for calls. Weight is listed at 29 g, matching the flymory, and the frame is described as firm but bendable.
The compromises: controls are physical buttons rather than touch, and the unit ships in orange with a black carry case. Some people love that visibility; others want something that blends in. In my opinion this is the headset for the runner or gym regular who sweats heavily, trains outdoors in changeable weather and hates charging mid-week.
• Best for battery life → MZYDM Bone Conduction Headphones (15 hours quoted, versus 12 hours at 50% volume on the flymory).
• Best for water and sweat resistance → MZYDM Bone Conduction Headphones (IPX6 versus IPX5 — but neither is for swimming).
• Best for the newest wireless connection → MZYDM Bone Conduction Headphones (Bluetooth 5.4 and a 15 m range versus 5.3 and 10 m).
• Best for head and ear fit → flymory Bone Conduction Headphones (titanium-alloy neckband that bends 360 degrees, plus ergonomic ear hooks).
• Best for a low-key look → flymory Bone Conduction Headphones (black, touch controls, no buttons).
• Best for switching between phone and laptop → MZYDM Bone Conduction Headphones (multi-point connection).
• Best for loud listening sessions → MZYDM Bone Conduction Headphones (the flymory drops to about 8 hours at 80% volume).
• Best for charging convenience → flymory Bone Conduction Headphones (universal Type-C port, two-hour full charge).
If I had to buy one, I would take the MZYDM Bone Conduction Headphones. The 15-hour runtime, IPX6 rating and Bluetooth 5.4 are the three things that matter most over months of real use — fewer charges, less worry about sweat, and a connection that stays solid. The flymory is the better choice only if fit is your biggest frustration, because that bendable titanium band solves a problem the MZYDM does not address as directly. Everything else being close, I lean toward the longer-lasting, better-sealed option. Check the current price on Amazon before you decide, since that is the one variable that can flip this call.
FAQ
how to bone conduction earphones work
how to wear bone conduction earphones
Hook the band behind your head and rest the transducers on the bone just in front of your ears, not inside the canal. The flymory's titanium neckband bends 360 degrees so you can shape it to your head; the MZYDM's frame is firm but flexible in the same way.
how to use bone conduction earphones
Charge them first — the flymory reaches a full charge in about two hours via Type-C, and MZYDM quotes 15 hours of playtime. Then pair over Bluetooth (5.3 on the flymory, 5.4 on the MZYDM) and use the touch panel or buttons to control playback and calls.
are bone conduction earphones good for running
Yes — both are open-ear and lightweight at 29 g, so you keep awareness of traffic while the ear hooks hold the set in place. For heavy sweating or wet weather, the MZYDM's IPX6 edge over the flymory's IPX5 makes it the stronger running pick.
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