ECOOPRO Adjustable Foldable Wireless Bluetooth Handsfree Over Ear Stereo Headphones Headset Earphone Supporting TF card /FM Radio Audio Cable Inclued (A White) Wireless bluetooth headphones,foldable & ddjustable headband for comfort and secure fit Support TF card , you can enjoy music when you are running ,cycling , playing and get rid of the lines plagued Line-in function, equipped with audio cable(for Free), the receiver can be used as a wired earphone FM radio function (Frequency rangeof receiver: 80-110MHZ) Rechgarable , high quality lithium ion battery , working time:8 hours