Vidonn F1s Swimming bone conduction headphone,IPX8 Waterproof

IPX8 WaterproofSwimming bone conduction headphone.There is no need to worry about rain when running It has reliable.protection performance and is not afraid of rain, sweat and splash. More audio and playbackmodes are supported：Support MP3/FLAC/WAV/M4A/APE audio formats. +16GB expandable memory. lnnovative patent fordamping twist design.with the technology o'dual tone integration", which is more powerful,lighter and stimulates your sports potential. Medical grade silicone materialSoft and skin-friendly, non-allergic.Made of medical grade liquid silicone, it is light and flexible,soft andskin-friendly, more environmentally friendly and more textured. 8 hrs music playtime.12 hrs talking time.200 hrs standby time.