Earphones, HotnCold in-Ear Sweatproof Earbuds Headphone Built-in Mic Stereo, Volume Control and Noise Isolating, Sports Headset for iPhone, iPod, iPad, Android Smartphone, MP3-B Slim desgin, Desk,bed,outdoor, wherever you are, it offers convinience. 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. Fully exercise-proof: with functional user interface, earpiece design, and a 10-meter working distance, our headphones will let you enjoy music through a variety of activities. V4.1 Breakthrough exclusive technology doubles Soundbeats QCY QY7 playtime to a solid 5 hours. Package contents: hotNcold Wireless Headphones, user manual, charging cable, and custom earbuds.