Description: With micro SD TF card slot， you can play mp3 \/ mp4 format files in the TF card Support A2DP， AVRCP， headset， handsfree profile Wireless portable mini Bluetooth stereo speaker system Saves you from the hassle of tangled wires Built in rechargeable battery ， charged by computer via USB interface(USB Cable Included) This model of speaker supports any mobile device comes with Bluetooth function such as IPHONE， IPAD， Samsung Galaxy\/Note\/tablet， Laptop， Tablet PC， etc Compact and portable，convenient to carry， easy to use Specifications: Bluetooth Version:V2.1 Working Range:Up to 10m (about 33 feet) Working Time: 5 hours Charging Time: 1~2 hours Battery Charging Voltage: 5V!#!amp!*!plusmn;0.5V Battery Capacity: 520mAh Loudspeaker Output: 40mm 2.6ohm 3W Input power: DC 5V Frequency Response: 60Hz-18KHz S\/N: !#!amp!*!ge;96db Distortion: !#!amp!*!le;0.5% Dimension: 60x60x53mm Weight: 230g Color:Black，Blue，Yellow，Red.Green Package Included: 1 x Mini Portable Bluetooth Handsfree Wireless Speaker 1 x USB Cable with AUX Audio Line (TF Card NOT Included)