Opteka BTX-1 Wireless Bluetooth 4.0 Collapsible Headphones with Built in Microphone, 8 Hour Battery & Case Wireless Bluetooth 4.0 Stereo Headphones with a range 32.8' (10 m) Pairs with your iPhone, iPad, iPod or Android Smartphone or Tablet, MP3 player, Laptop or any other Bluetooth-enabled device Built-in rechargeable battery which lasts up to 8-hours Integrated controls easily take and make calls, choose next and previous tracks, and raise or lower the volume while on the go Pressure-relieving cushions sit gently on your ears for a comfortable acoustic seal and powerful bass response