Marsboy Bluetooth Headset with NFC Pedometer Bluetooth 4.1 Wireless Sports Stereo Foldable Headphone Unique Pedometer Function - With a smart app(Android OS).Recording steps by sensing body motion, the pedometer not only can measure steps and distance, but also calculate how much calories you burned.It is a great function for Outdoor Hiking,Running. High Sound Quality- Smooth high pitch and the excellent bass combine with eachother perfectly Just need to pay a little but gain a great world of music. Light and foldable- easy to bring along wherever you go, soft PU leather provides a comfy wearing experience. NFC Support - Latest Bluetooth V4.1 technology and NFC Fast pairing Function, when high speed connecting , bring higher-quality stereo sound experience.Compatible with iPhone 6s/6s Plus, 5s 5c 5 4, Samsung,HTC, LG, tablet, MP3, and almost all devices with Bluetooth function. LONG STANDY TIME - 180 Days . LONG TALK TIME : 60 Hours .CHARGE TIME : 3 Hours . MUSIC PLAY TIME : 45 Hours .PLEASE NOTICE: this infor is only for estimate,not a very precise data.