Sanag RunPower B91SProMax Blue Bone Conduction Headphones

Sanag RunPower B91SProMax are Blue bone conduction Headphones, sized 5.39" x 4.25" x 1.86"; UPC 742803593760. They transmit sound through cheekbone vibrations, leaving the ears open so the wearer can hear their surroundings. A built-in night light adds visibility in low light. Onboard 64G storage holds up to 20,000 tracks and supports FLAC, AAC, MP3 and WAV.

Bluetooth does not work underwater, so swimming requires local MP3 mode. The IPX8-rated headphones are described as submersible up to two meters for two hours. They have silicone around the ear and an elastic titanium headband. Dual microphones with CVC noise reduction are claimed to reduce up to 95% of transmitted background noise; the microphone is also described as CVC 8.0.

A QCC chipset supports wireless connectivity, and the headphones use Bluetooth 5.3. Battery life is up to 10 hours of playback or talk time with the night light on, with a stated full charging time of 1.5 hours.