Description: Compact and Portable: This wireless speaker is easy to carry, suitable for home travel. Wide Compatibility: v4.1, fast and stable connectivity at a normal range 10 m, suitable for phone laptop. Long Playtime: USB Charging, built in 350mAh battery, working time is up to 2-3h. Function: Support TF SD Card, U Disk (Not Included), and the colorful breathing light will be turn on when you turn the speaker. Fashion appearance, 360 degree surround sound, make you enjoy the clear music. Specification: Type: A10 Speaker Material: ABS Plastic Use Time: 2-3h Charging Time: 2h Battery Capacity: 350mah Interface Type: USB Signal-to-noise Ratio: ≥70db Connection Distance: 10 Meters : v4.1 Size Chart: Size: approx. 58x58x57MM/2.28x2.28x2.24inch Package Includes: 1 Piece Wireless Speaker 1 Piece USB Cable Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!