Merit Byond Portable Wireless Bluetooth 4.0 Stereo Headphone with Microphone and 10hours Rechargeable Battery for iPhone 5S/5C,iPad, Samsung Galaxy S5/S4/Note, Blackberry, Android/Windows phone, Tablet and other Bluetooth Devices-Black Latest CSR Bluetooth V.4.0(fully backward compatible), lower energy, up to 10meters/33-ft (without door/wall), swiftly wireless connecting with Bluetooth enabled devices; A2DP1.2, AVRCP1.4, HSP1.2, HFP1.6 profile supported Built-in rechargeable Grade A polymer battery powers up to 10 hours of continuous wireless music playback/talking on a single charge (2.5hours), 20days of standby, battery status can be seen from iOS devices (Android/Windows phone and tablet not supported) Strong bass, distinctive mids and trebles, stereo sound delivered from the comfortable soft leather ear pads; extendable and rugged headband suitable for different sizes of head Integrated microphone allows noise and echo reduction hand-free phone call, Skype, Messenger and other APPs voice/video chatting, PC gaming, Siri and Facetime Package contents: Merit Stereo Headphone, USB Charging Cable, User Manual, Travel Case