1. Portable mini speaker, outdoor wireless speaker 2. Built-in lithium battery, rechargeable 3. Support TF usb driver Function Portable mini speaker, outdoor wireless speaker Support TF usb driver, MP3, MP4, WMA Computer Speaker, Iphone Speaker Built-in lithium battery, rechargeable NANO-style button and noble metallic shell designed Shell color can be choosed (pink, blue, peach, white) Accessory ...