Bluetooth Headphones Aita BT816 Multifunctional Wireless Headset, Foldable Over-ear Headphones, with FM radio and MIC, TF card, LED lights, for iPhone Android Mp3 Tablet. Adults Teens Kids (Red) Great Sound: BT816 combines diameter up to 2.20 inches speakers with wireless Bluetooth 4.1 operation to bring you an excellent sound impression: rich and strong bass, crisp and clear highs. Bluetooth 4.1 chip: Its the latest Bluetooth chip that can transmit data at high speed to your Bluetooth devices like smart phones, tablet computers and laptops, and have low power consumption to offer up to 8 hour batter life. 3.Abundant of broadcast functions: Aita engineers also consider that our clients might not always have other devices to play music with Bluetooth headsets, so we add FM radio and TF card reader on this headphone. If your smart phone, tablet computer or laptop is power off, you still can use BT816 to listen the radio or insert your TF card to play music. Comfortable to wear: Its ear cups is padded with sufficient foam and covered with soft leather to provide a comfortable wearing experience. Also, the fold-up design of BT816 saves more spaces on bagging. No worries on battery dies: BT816 works in wired mode with included cord.