NANK Runner Diver2 Bone Conduction Headphone IP68 32G MP3 Bluetooth 5.3 10h

Built for swimmers and outdoor athletes

The NANK Runner Diver2 uses bone conduction to send audio through the cheekbones, leaving the ear canals open so users stay aware of traffic, coaches or teammates. An IP68 rating lets the headset survive full immersion for pool training, while the open-ear design avoids the pressure and hygiene issues of in-ear buds during long sessions. Built-in 32G storage holds roughly 4800 tracks in MP3, M4A, WAV, APE or FLAC, so swimmers can leave the phone in the locker.

Magnetic cable, MP3-only underwater

Charging and data transfer share a single magnetic connector that snaps on without fiddly ports, and a full charge takes 1.5 hours. Bluetooth 5.3 pairs quickly on deck, but the radio cannot transmit through water, so the supplier notes that MP3 mode must be used and phone Bluetooth turned off while swimming. The headset is not rated for sea water, and the TF player only recognises the listed audio formats, so files in other codecs will not appear in the playlist.

Ten-hour battery at moderate volume

The 180mAh cell delivers up to 10 hours of playback at 60% volume, which covers most training blocks and race-day schedules. Bone conduction drivers naturally leak less sound than traditional speakers, yet the open architecture still lets ambient noise in, so perceived loudness drops in noisy crowds or wind. CVC6.0 microphone processing keeps voice pickup clear for post-swim calls, but extended high-volume use will shorten the stated runtime.