Hamburger speaker

Mini Hamburger speaker

1, Built-in rechargeable lithium battery;charged via USB cable;
2, High fidelity speaker for clear pure sounds;
3, Pocket size for easy mobility(Retracted size:5.2*3.7CM);brings it while traveling,camping;
4, Battery Capacity: 250--300MA,run time more than 2 hours at medium volume; battery lifecycles: 300-500 times;
5, For laptop,mobile phone,computer,other PC, MP3/4,etc;