BASN Build-in Battery Wireless Bluetooth Earphone Stereo With Beats Sweatproof for Sports Running Gym Compatible with Andorid IOS Mobile Phones Fantastic Beats Stereo Effect bring you the sound you never ever heard Base on the human Ear shape design, it is hard to slip off your ear no matter what sport you are doing Simple-to-use: control all functions of your music (volume, sound, song selection) and calls from your phone via our simple-to-use user interface on the headphones themselves wireless to connected with your smart device, tablet pc, and mobile phone Built-in superior lithium battery,it supports up to 5 hours talk/play time and super long standby time up to 196 hours when it is fully charged.