Head-to-head · Best Bone Conduction Headphones

Nank Runner Diver2 Pro vs Shokz OpenSwim Pro

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

The short answer

Shokz OpenSwim Pro comes out ahead by a clear margin (4.1 vs 4.4). The gap is mostly about Swimmers and triathletes who need both in-pool MP3 playback and Bluetooth on land, and will use the extra functionality enough to justify the price. — read the strengths below before deciding.

Ranked #5 in Best Bone Conduction Headphones

Nank Runner Diver2 Pro

4.1

$122.99as of Jun 7

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. Soundphile Review scored it 7/10 and 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
— Instrument separation suffers due to the bone-conduction approach

$122.99 · Check Price on Amazon Full review →

Higher ratedRanked #3 in Best Bone Conduction Headphones

Shokz OpenSwim Pro

4.4

$179as of May 26

The OpenSwim Pro is Shokz's swimming-focused model, combining 32GB of onboard storage for in-pool playback with Bluetooth for use on dry land. 220 Triathlon scored it 92% and reviewers consistently call it the best-sounding waterproof bone-conduction option. The trade-off is a premium price and a driver that's a step behind the OpenRun Pro 2 on bass.

Strengths

— Dual-mode: Bluetooth streaming on land plus 32GB onboard MP3 storage for underwater playback
— IP68 rating with triple-sealed seams, submersible up to 2 meters
— Up to 9 hours of Bluetooth playback, with about 6 hours in MP3 mode

Watch-outs

— Minimal bass; the driver is a generation behind the air-conduction-equipped OpenRun Pro 2
— At $230 it is the most expensive option in this group
— Still uses a proprietary magnetic charger

$179 · 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 OpenSwim Pro

The swimmer's pick: like the Mojawa Run Plus and Nank Runner Diver2 Pro it carries 32GB of onboard storage for underwater use, but its bass trails the air-conduction Shokz OpenRun Pro 2 and it costs more than the standard Shokz OpenRun.

Specs side-by-side

Spec	Nank Runner Diver2 Pro	Shokz OpenSwim Pro
Drivers	Bone conduction (3rd gen)	Bone conduction (8th gen)
Battery	10 hours	9 hours Bluetooth / 6 hours MP3
Charge	Magnetic, 10 min = 1 hr	Proprietary magnetic, 10 min = 3 hr
Water Resistance	IP69 (submersible)	IP68 (submersible to 2m)
Weight	32g	27.3g
Bluetooth	5.4 + dual connection	5.4 (above water)
Onboard Storage	32GB MP3	32GB MP3
Frame	Titanium band	Titanium band
Warranty	1-year	2-year

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