JVC Bluetooth Gumy Sport In Ear Headphone offer a comfortable secure nozzle fit design. Elevate your next workout with a sweatproof rating of IPX2. JVC's HAEN15WB have a built in 6.5 hour rechargable battery that will keep you going hour after hour. A quick 15 minute charge will keep your music playing for up to an hour. Find your ideal fit with the S/M soft nozzle fit earpieces included. The tangle free grooved cable with adjustor keeps the cord at the perfect length to reduce movement. In line microphone and remote allows users to control volume, answer/end calls and change music tracks. The headphones are voice assistant compatible so enjoy all the conveience and benefits of digital personal assistants hands free. JVC's HAEN15WB offer Bluetooth version 5.0 technology.