Waterproof Headset 1.Neckband Style 2.Waterproof for 3 meters deep under the water 3.Detachable 4G or 8G internal flash memor Waterproof HeadsetEasy bend to detach internal memory Built-in Li-on rechargeable battery over 10 hours continuous playingSix buttons: Play / Previous / Next / Volume up / Volume down / ResetIPX7 water resistance levelFM modual is optionalCE, FCC, RohsColors: Black, Blue, ...