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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-05 · 8 min read · Independent comparison
• Shokz OpenRun Mini Bone — biggest strength: an 8-hour battery, Bluetooth 5.1 with a 40-meter range, and a wraparound frame sized 21mm shorter than the standard OpenRun for smaller heads. It is built for dry-land sport and clear calls.
• Shokz OpenRun Mini Bone — biggest trade-off: IP67 means sweat and rain are fine, but Shokz explicitly says it is not suitable for swimming. No built-in memory either, so it needs a paired phone.
• MARLALL Liquid Silicone Swimming — biggest strength: IP68 waterproofing plus 32GB of built-in MP3 memory, so it plays without any Bluetooth signal at all — which is exactly what you need once your head goes under.
• MARLALL Liquid Silicone Swimming — biggest trade-off: Bluetooth 5.4 reaches only about 10 meters, and you must switch to MP3 mode in the water because Bluetooth cannot transmit underwater. The warranty is one year, not two.
• Who each pick is for: Shokz for the runner, cyclist or remote worker who lives in video calls and wants awareness of traffic; MARLALL for the lap swimmer who wants music in the pool and doesn't mind managing a separate MP3 mode.
The OpenRun Mini is the version of Shokz's open-ear frame built for smaller heads. The band is 21mm shorter than the standard size, which matters more than it sounds — an open-ear headphone that doesn't sit right slides around mid-run, and a shorter band is the fix. At 26g with a wraparound frame in plastic, silicone and titanium, it's the kind of thing you put on and forget about, which is the entire point of the open-ear category.
It runs on Shokz's 8th-generation bone conduction driver, transmitting sound through your cheekbones so your ear canals stay completely open. If you ride or run near traffic, that's the real feature — you hear the car before you see it. The spec sheet lists a 20Hz–20KHz frequency range, 105dB sensitivity and 8.5-ohm impedance, and Shokz leans hard on call clarity, which is the part I'd care about most if I were wearing these for video calls all day.
Battery is 8 hours of continuous play, with a 10-minute quick charge giving up to 1.5 hours — genuinely useful when you realise your headset is dead five minutes before a meeting. Charging is USB-C, there's a moisture-detection alert to stop you charging a wet unit, and Bluetooth 5.1 with a stated 40-meter range is generous for a headphone you'll mostly keep within a few feet of your laptop or phone. Controls are on the frame: call, volume and media, plus a remote-style media control.
MARLALL Liquid Silicone Swimming: Who It's For
The MARLALL is the opposite bet. It's a bone conduction headphone designed around water, with an IP68 rating and 32GB of built-in memory that holds roughly 8,000 songs in MP3 mode. That memory is the whole trick: Bluetooth signals can't travel through water, so the headphone has to carry the music itself. MARLALL says this outright — switch to MP3 mode when swimming.
It's light. The listing gives 22.68g for the item weight and describes a 29g lightweight build, both of which are in the same featherweight territory as the Shokz. The frame is silicone with adjustable straps, and the marketing leans on the idea that it conforms to your ears and won't slip. That adjustability is doing real work here, because a swimming headphone that shifts on a flip turn is useless.
Bluetooth 5.4 is the newer standard of the two, and MARLALL claims better connection stability and interference resistance — but be realistic about range: 10 meters (33 feet) versus the Shokz's 40 meters. For a phone in a gym bag or poolside chair that's plenty. For walking away from your desk mid-call, it's tighter than you'd like. Charging is magnetic rather than USB-C, so don't lose the cable — that's a genuine downside of this design choice. The frequency range is the same 20Hz–20,000Hz, and like the Shokz there's no active noise cancellation, which is normal for bone conduction.
Who should buy it: lap swimmers, open-water swimmers, and anyone who wants music in the pool without stuffing anything into their ear canals. Who should skip it: people who mostly need a desk headset for calls. The 10-meter Bluetooth range and the MP3-mode workflow are extra steps you don't need if you never get wet, and the one-year warranty is half the coverage Shokz offers.
Side-by-Side: Which Should You Choose?
• Best for swimming → MARLALL Liquid Silicone Swimming. IP68 and 32GB of MP3 memory; the Shokz is explicitly not for swimming.
• Best for battery life → Shokz OpenRun Mini Bone. 8 hours of play, plus a 10-minute quick charge for up to 1.5 hours. MARLALL doesn't publish a playtime figure.
• Best for running and cycling → Shokz OpenRun Mini Bone. IP67 sweat resistance, moisture-detection charging alert, and the shorter band for a stable fit on smaller heads.
• Best for phone-free listening → MARLALL Liquid Silicone Swimming. Onboard 32GB storage; the Shokz has none.
• Best for newer Bluetooth → MARLALL Liquid Silicone Swimming. Bluetooth 5.4 versus 5.1 — though its 10-meter range is far shorter than the Shokz's 40 meters.
• Best for charging convenience → Shokz OpenRun Mini Bone. USB-C is everywhere; MARLALL's magnetic charger is proprietary and easy to misplace.
• Best for warranty coverage → Shokz OpenRun Mini Bone. Two years versus one.
• Best for a smaller head → Shokz OpenRun Mini Bone. That 21mm-shorter band is the reason this model exists.
• Best for adjustable fit → MARLALL Liquid Silicone Swimming. Silicone frame with adjustable straps.
If you're weighing a bone conduction headphone for video calls specifically, think about what your day actually looks like. A touch control headphone for video calls is only useful if the frame sits still on your head for hours — the Shokz shorter band and 26g weight are aimed squarely at that. If your calls are short and your swims are long, the MARLALL's memory-first design wins. What you won't find on either sheet is memory foam ear cushions — these are open-ear bone conduction sets, and by design nothing goes inside your ear canal. Anyone shopping for memory foam ear cushions wireless headphones for video calls is looking at a different category entirely, and should know that before ordering.
I'd buy the Shokz OpenRun Mini Bone. In my opinion it's the better all-rounder: 8 hours of battery, USB-C charging, Bluetooth 5.1 with a 40-meter range, a two-year warranty, and a frame sized for smaller heads. It's the one I'd trust for video calls, runs and commutes, and Shokz has been building this category long enough that the basics are nailed down.
The MARLALL is the right answer for exactly one job, and it does that job well — swimming, where the Shokz simply can't follow. If the pool is your priority, buy the MARLALL without hesitation. If it isn't, buy the Shokz. Whichever way you lean, check the current price on Amazon before you commit, since I don't quote prices here.
how to bone conduction earphones work
They use a driver that vibrates against your cheekbone rather than a speaker aimed into your ear canal. Those vibrations travel through the bone to your inner ear, so your eardrums stay open to the world around you. Both headphones here use that same bone conduction driver design, with a 20Hz–20,000Hz range.
how to wear bone conduction earphones
You rest the transducer pads on your cheekbones just in front of your ears, with the band running behind your head or over the top. The Shokz OpenRun Mini's band is 21mm shorter than the standard size, so it sits tighter on smaller heads. The MARLALL uses a silicone frame with adjustable straps to dial in the fit.
how to use bone conduction earphones
Pair over Bluetooth, then use the on-frame controls for calls, volume and media. The Shokz offers Bluetooth 5.1 with a 40-meter range; the MARLALL offers Bluetooth 5.4 with a 10-meter range. For swimming you must switch the MARLALL to its 32GB MP3 mode, because Bluetooth can't transmit underwater.
how are bone conduction earphones different for video calls
Your ears stay uncovered, so you hear your own voice naturally and stay aware of your surroundings while on a call. The Shokz OpenRun Mini is the one here that Shokz positions around clear call quality, with call, volume and media controls on the frame and an 8-hour battery for long days. Neither model has active noise cancellation, so a noisy room will come through.
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