Sony Walkman NW-WS623 Waterproof Sports MP3 Player Headphones 4GB Bluetooth Black

Tough specifications with saltwater resistance, dustproof, and heat/cold resistance. It features an "ambient sound mode" that makes it easier to hear surrounding sounds and people's voices. Hands-free calling via voice call app With a battery life of up to 12 hours, enough to easily handle a full marathon, and quick charging that allows for approximately 60 minutes of playback with just a 3-minute charge, this device also supports quick charging. Equipped with an OPR (Operation) lamp to indicate battery level. Included: Ear tips (2 pairs of each size), swimming ear tips (2 pairs of each size), USB cradle, USB cable, adjustment band, instruction manual, usage precautions/main specifications, please read before using in a pool or ocean, product registration request