Specification: ? Insert the TF Card to play music Build-in TF smart decoder、 you can listen to MP3 music stored in TF card. ? Aux Input Pulg While work with AUX、 it is easily to listen to sound from PC、 ipod/iphone、 MP3/MP4. ? Bluetooth handfree work with the Bluetooth for wireless communication. ? Stereo Blutooth Stereo Bluetooth Speakers、surpporting A2DP/AVRCP、 allowing you enjoy wireless HI-FI stereo music ★ Features: ? Battery voltage:3.7V ? Capacity:520mAh ? Charging Voltage: 5V ? Loud speaker size: 45mm 4Ω 3W ? S/N 95dB ? Distortion:＋ 0.5% ? Size:60mm x 60mmx 50mm 〔 Compatible with : ? For iPad / For iPad2 /For New iPad /For iPad Mini ★ Package Includes: ? 1 x Bluetooth Speaker ? 1 x Audio and USB charging cable ? 1 x Retail box