Mini handheld portable threadless BT speaker, high definition sound quality, high quality lastics material and anti-dust fabric cover, support TF and USB flash disk automatical recognize and play, built-in recha-rgeable cell, lengthen service time, lightweight to carry. Features: BT connection can play music, up/down tune can be adjusted, volume, playing games, watching movies can transmit sound. Digital MP3 player, support U disk, TF card, no need to switch, after insertion automatically read audio files to play. With radio function, FM high sensitivity stereo digital reception function. USB cha-rge interface, built-in recha-rgeable lithium cell, it can move freely after full cha-rged. 1*3W cloth horn, restore high definition sound quality, scientific acoustic structure design. Enhanced digital amplifier IC, low energy consumption, high rate of work, strong sound intensity loud and clear. Multi-key control, volume, mode can be adjusted separately. Specifications: Color: Blue, Black, Red, Green, Silver (optional) Material: Lastics + Fabric Cover Frequency Response: 40Hz-20KHz Expansion Storage: 16GB Operation Way: Keypad Function: Card Plug, Anti-Dust Connection Way: BT Sound Track: 2.1 BT Version: 4.0 Play Format: MP3 Cha-rge Port: USB Play Time: 2-3H Horn: 1 * 3W Cell: 1 * Built-In Recha-rgeable Lithium Cell, 3.7V 300mAh (included) Package Weight: 110g / 3.88ounces Package Size: 120 * 80 * 40mm / 4.72 * 3.15 * 1.57in Packing List: 1 * Speaker 1 * USB Cable