hamburger USB-Lautsprecher

Hamburger usb speaker ,mp3 speaker ,mini speaker : 1.portable mini design ,easy to carry with 2.can connect to mp3 /USB /PC/mobile phone 3.logo printing is welcome Features: 1. Design smart, easy to carry, and music accompany you anytime, anywhere; 2. WithUSB/SD card slot, you can read music files in multiple formats; 3. May increase with the radio, with antenna strap and sound effects; 4. Button simple, with blue display; 5. Built-in lithium battery, can work for more than 5 hours. Product parameters: 1. Maximum support 4GB TF card 2. Speaker power: 4Ω 2W 3. Charging Interface: 5PINUSB 4. Built-in rechargeable lithium battery 300MA 5. Charge Time: 1 2h