Verdict
Head-to-head · Best Bone Conduction Headphones

Nank Runner Diver2 Pro vs Shokz OpenRun Pro 2

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

Shokz OpenRun Pro 2 comes out ahead by a narrow margin (4.0 vs 4.1). The gap is mostly about Runners and cyclists who want the best-sounding open-ear headphones for staying aware of traffic and don't need to swim with them. — read the strengths below before deciding.

Nank Runner Diver2 Pro
Ranked #4 in Best Bone Conduction Headphones
Nank Runner Diver2 Pro
3 sources1 derived$107.99as of Aug 1

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
Shokz OpenRun Pro 2
Higher ratedRanked #2 in Best Bone Conduction Headphones
Shokz OpenRun Pro 2
3 sources$179.95as of Aug 1

The OpenRun Pro 2 is the consensus pick for the best-sounding bone conduction headphones, pairing a bone-conduction driver with a small air-conduction speaker to push bass that the form factor usually can't manage. SoundGuys calls them the cream of the crop and TechGearLab ranked them #1 of 10 running headphones tested. The IP55 rating and high price are the main caveats.

Strengths
  • DualPitch dual-driver design adds a dedicated air-conduction speaker for noticeably deeper bass than bone-conduction rivals
  • 12-hour battery life, up from 10 hours on the original OpenRun Pro
  • Switched to a universal USB-C charging port, ending the proprietary magnetic dock
Watch-outs
  • IP55 rating is a step down from the IP67 of the standard OpenRun, so they cannot be submerged
  • Volume buttons are hard to distinguish by touch, especially with gloves
  • Microphone struggles in windy conditions

Derived means the reviewer published no score, so one was inferred from their written verdict. Everything else is a number the publisher printed. How we rank.

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 Pro 2

The best sound in this group thanks to its air-conduction driver, but unlike the Shokz OpenSwim Pro, Mojawa Run Plus and Nank Runner Diver2 Pro it has no onboard storage and its IP55 rating means it can't be submerged like the IP67 Shokz OpenRun.

Specs side-by-side

SpecNank Runner Diver2 ProShokz OpenRun Pro 2
DriversBone conduction (3rd gen)Bone conduction + air conduction (DualPitch)
Battery10 hours12 hours
ChargeMagnetic, 10 min = 1 hrUSB-C, 5 min = 2.5 hr quick charge
Water ResistanceIP69 (submersible)IP55
Weight32g30.3g
Bluetooth5.4 + dual connection5.3 + multipoint
Onboard Storage32GB MP3None
FrameTitanium bandTitanium band
Warranty1-year2-year
← See the full ranking of best bone conduction headphones