Bluetooth Wireless Rechargeable Headphones with Micro SD Card Compatibility, FM Stereo Radio (Black) for LG, HTC, Motorola, Nokia, Blackberry, Sharp Aquos Crystal, OPPO Find 7, 7A, OPPON N1, Xiaomi Ml4, One Plus One, Vertu Aster, Meizu MX4 Pro and other smartphones + eCost Microfiber Cloth Headset has a built-in quality MP3 decoding chip MP3 format music stored in a SD memory card can be played within the headphones The built-in FM Stereo radio can store 56 channels of your favorite stations Enjoy music with other devices and computer/Laptop with an accessory connector 1.44 dot matrix display screen