How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want serious noise reduction and all-day battery life for loud yard work, choose ZOHAN EM037; if you need open-ear awareness, a featherweight fit and sweat resistance for running and cycling, choose MZYMI Bone Conduction Headphones.
• ZOHAN EM037 — biggest strength: 30dB SNR noise reduction paired with a 1100mAh rechargeable battery rated for 40 hours of playtime. It is built to quiet a loud, repetitive job.
• ZOHAN EM037 — biggest trade-off: It is a full earmuff with a durable ABS shell and double thickened foam (11.52 ounces), so it seals you off from your surroundings — the opposite of open-ear awareness.
• MZYMI Bone Conduction Headphones — biggest strength: Bone conduction through the cheekbones with a 28g open-ear hook design, Bluetooth 5.4 and IPX6 water resistance for sports.
• MZYMI Bone Conduction Headphones — biggest trade-off: No active noise control and just 15 hours of playtime, so it will not block out a mower or last as long between charges.
• Choose ZOHAN EM037 if your priority is protecting your hearing from loud equipment while you work.
• Choose MZYMI if your priority is staying aware of traffic and your surroundings while you train outdoors.
The ZOHAN EM037 is, at its core, a hearing protection product that happens to stream audio. The spec that defines it is 30dB SNR noise reduction, delivered through a durable ABS shell and double thickened noise canceling foam, with gel ear pads for comfort against the head. That combination is designed for one job: knocking down the volume of genuinely loud environments — mowing, snowblowing, and similar equipment work — while still letting you listen to something.
Battery is the other headline. A 1100mAh rechargeable battery is rated for 40 hours of playtime. In practical terms, that means you can run it across many work sessions before you need to think about charging, which suits someone who uses it in bursts — a couple of hours on the mower, then back in the garage — rather than a commuter who charges nightly. The Bluetooth connection and gel ear pads round it out as a wearable you can keep on for a long session.
Who should skip it? If you need to hear traffic, a coworker, or your surroundings while you wear headphones, this is the wrong pick. The whole point of the EM037 is sound isolation, and its 11.52-ounce build is a sealed earmuff, not an open-ear design. Runners and cyclists who need awareness should look elsewhere.
MZYMI Bone Conduction Headphones: Who It's For
The MZYMI Bone Conduction Headphones take the opposite approach. Instead of sealing your ears, they use bone conduction technology with 15mm speaker driver units to send audio through your cheekbones, leaving your ear canals open to the world around you. That is the entire appeal: you get your music, but you can still hear a car coming up behind you, a training partner, or a trail marker.
The MZYMI is built for movement. It weighs only 28g, uses an open-ear hook shape, and carries an IPX6 waterproof rating — sweat and water resistant for workouts, fitness and running (though not for swimming). Power comes from Bluetooth 5.4, which the specs describe as offering improved range (up to 15 meters), reduced latency and more efficient power consumption. Battery life is 15 hours, with a 2.5-hour charge time over Type-C. There is no headphone jack; it is wireless only.
The audio side is worth noting for anyone who cares about the numbers: an 80-ohm impedance, a 20Hz–20,000Hz frequency range, 90dB sensitivity and a dynamic driver. The design also claims to reduce sound leakage by up to 50% through a fully enclosed cavity, so your music stays more private than you might expect from an open-ear set.
Who should buy it? Runners, cyclists, hikers and gym-goers who want audio without closing themselves off, and who value a light, secure fit over maximum isolation. The Blue-Black color, silicone-and-plastic build and included carrying case suit a gym bag.
Side-by-Side: Which Should You Choose?
• Best for noise reduction → ZOHAN EM037. 30dB SNR with a sealed earmuff design versus no noise control on the MZYMI.
• Best for battery life → ZOHAN EM037. 40 hours of playtime from a 1100mAh battery against the MZYMI's 15 hours.
• Best for situational awareness → MZYMI. Open-ear bone conduction through the cheekbones keeps your ear canals clear.
• Best for running, cycling and workouts → MZYMI. 28g weight, hook fit and IPX6 water resistance are built for sport.
• Best for loud yard and equipment work → ZOHAN EM037. Mowing and snowblowing are exactly the use cases it is designed around.
• Best for long wear comfort in a sealed design → ZOHAN EM037. Gel ear pads and thickened foam are aimed at comfort during long sessions.
• Best for modern connectivity → MZYMI. Bluetooth 5.4 with up to 15 meters of range and Type-C fast charging.
• Best for a lightweight carry-around set → MZYMI. 28g headphones plus a compact carrying case.
In my opinion, these two do not really compete — they solve different problems, and that is the whole story. If your goal is protecting your hearing while you run loud equipment, I would buy the ZOHAN EM037: 30dB SNR, a 1100mAh battery and 40 hours of playtime make it the more protective, longer-lasting tool. If your goal is staying aware of your surroundings during runs and rides, I would buy the MZYMI Bone Conduction Headphones: the 28g open-ear build, IPX6 rating and Bluetooth 5.4 fit sport far better. Pick by your environment, not by the category.
FAQ
No. The MZYMI has no noise control, so a mower will compete with your audio. For loud equipment, the ZOHAN EM037's 30dB SNR reduction is the design built for that job.
The ZOHAN EM037, rated for 40 hours of playtime on a 1100mAh battery, versus 15 hours on the MZYMI, which charges in about 2.5 hours over Type-C.
They are IPX6 waterproof, which covers sweat and water resistance for workouts and running, but the specs specifically note they are not suitable for swimming.
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See also: Back Bay Audio Runner vs ZOVIMAX Bone Conduction Headphones, PROHEAR 033 vs KLVCUPQ Bone Conduction Headphones, LOBKIN Bone Conduction Headphones vs LC-dolida Sleep Mask