Details:Support Bluetooth、 Aux in、 TF/Micro sd card functionWireless Stereo、 Multipoint A2DPFaster connecting、 clear sound、 anti-interferenceCompatiable with bluetooth phone MP3/MP4/PC/MAC/PSP etc. Specification:*Bluetooth Version: V3.0*Voltage of built-in battery: 3.7*Distortion: 0.5%*Net Weight: about 385g*Charging Voltage: 5V*Talking Time: about 8 hours*Dimension: 131*80*65mm*Battery Capacity: 1200MAH*Loud Speaker Dimension: 40mm 3W*SNR: 85Db*Charging Time: 3-4hours*Music Working Time: about 4 hours Package list:1 * Wireless Bluetooth Speaker