Head-to-head · Best Bone Conduction Headphones

Nank Runner Diver2 Pro vs Shokz OpenRun

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

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The short answer

Nank Runner Diver2 Pro comes out ahead by a clear margin (4.4 vs 3.8). Nank Runner Diver2 Pro is best for: Open-water swimmers and divers who prioritize maximum waterproofing and onboard storage over sound quality. Read the strengths below before deciding.

Higher ratedRanked #5 in Best Bone Conduction Headphones

Nank Runner Diver2 Pro

4.4

1 source$152.99as of Oct 11

The Nank Runner Diver2 Pro (from Naenka) is the most aggressively waterproofed pick here, with an IP69 rating that beats the IP68 of its rivals, plus 32GB storage and Bluetooth 5.4. TechRadar called it one of the best waterproof headphones available. Sound is the weak spot: very midrange-forward with little bass.

Strengths

— Class-leading IP69 waterproofing using nano coating and ultrasonic welding, the highest rating in this group
— 32GB onboard MP3 storage plus Bluetooth 5.4 for above-water streaming
— 35-degree adjustable ear hook switches between open-ear and a noise-canceling mode

Watch-outs

— Sound is heavily midrange-focused with rolled-off bass and treble; reviewers note minimal physicality
— Bulkier and thicker than Shokz's slimmer frames to fit the MP3 module
— Maximum volume tops out around 85 dB, which can be drowned out in noisy settings

$152.99 · Check Price on Amazon Full review →

Ranked #4 in Best Bone Conduction Headphones

Shokz OpenRun

3.8

2 sources$129.95as of Oct 11

The plain OpenRun is the cheapest current Shokz and the one that trades features for toughness. SoundGuys rates it 7 out of 10 and RTINGS 7.3 out of 10, and with Believe in the Run all three land in the same place: a 26-gram titanium band that disappears on a run, full situational awareness, and thin bass. Against the OpenRun Pro 2 you give up the air-conduction driver and USB-C charging, and gain an IP67 rating the pricier model does not have.

Strengths

— IP67 rating means full sweat and dust resistance, more robust than the pricier OpenRun Pro 2's IP55
— 8-hour battery with a 10-minute quick charge giving 1.5 hours of playback
— Open-ear design keeps you fully aware of traffic and surroundings

Watch-outs

— Proprietary magnetic charging connector instead of USB-C
— No companion app or custom EQ
— Microphone quality is poor for calls in noisy environments

$129.95 · Check Price on Amazon Full review →

How they stack up

Nank Runner Diver2 Pro

The most waterproof option here, with an IP69 rating that exceeds the IP68 Shokz OpenSwim Pro and Mojawa Run Plus, but its midrange-only sound is weaker than all of them, including the air-conduction Shokz OpenRun Pro 2.

Shokz OpenRun

The value pick of the lineup: tougher IP67 sealing than the OpenRun Pro 2 but a single driver with weaker bass, and no onboard storage like the Shokz OpenSwim Pro, Mojawa Run Plus or Nank Runner Diver2 Pro carry for swimming.

Specs side-by-side

Spec	Nank Runner Diver2 Pro	Shokz OpenRun
Drivers	Bone conduction (3rd gen)	Single bone conduction
Battery	10 hours	8 hours
Charge	Magnetic, 10 min = 1 hr	Proprietary magnetic, 10 min = 1.5 hr
Water Resistance	IP69 (submersible)	IP67
Weight	32g	26g
Bluetooth	5.4 + dual connection	5.1 + multipoint
Onboard Storage	32GB MP3	None
Frame	Titanium band	Titanium band
Warranty	1-year	2-year

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