ECOOPRO Foldable Wireless Bluetooth Hands Free Over Ear Stereo Headphones Headset Earphone Supporting TF card /FM Radio Audio Cable Inclued (Blue) Bluetooth stereo over ear headphone/headset, 40mm driver deliver clear, rich sound. Bluetooth 3.0 technology: transmit data at high speed and bring you smooth music experience. Comfortable wearing: Soft PU leather ear pads and adjustable headband for for comfort and secure fit. High quality rechargeable lithium ion battery-8 hours continuous music time;FM radio function (Frequency rangeof receiver: 80-110MHZ). Bluetooth/Wired: Not only a Bluetooth headset, but also a wired headset. With the included cable, you can still enjoy favorite music when the battery runs low.