Specification: Item Type: Bluetooth Speaker_x000D_Material: ABS_x000D_Color: Gray_x000D_Model: K-90_x000D_Function: Bluetooth playback, FM radio, memory card playback, USB (connected to U disk) playback_x000D_FM Frequency: 87.5-108MHz_x000D_Interface Type: USB (connected to U disk), memory card slot, 3.5mm, miniUSB_x000D_Battery Type: 2x18650 battery (not included) Features: 1Support music playback function, directly play MP3 files in memory card or U disk. 2FM digital radio, radio station memory playback, direct selection of program number and frequency. 3Charging function, USB cable, can be connected to computer, mobile power USB port for charging. 4With power?off memory function, it automatically remembers the track played when it was last exited. 58888 digital display screens. 0?9 number keys, directly play the song in the music interface. PackageList: 1 x Bluetooth Speaker(Battery Not Included) 1 x Lanyard 1 x Data Cable