Brand  HTJ   Model  HTJ-500   Quantity  1   Color  Black + purple   Bluetooth Version  Broadcom   Operating Range  <10 meter  Compatibility  Iphone Ipad HTC Samsung Motorola and other cellphone   Microphone  Yes   Channels  2.1   Impedance  4ohms   Sensitivity  >75dB   Supports Music Format  MP3   Power Supply  USB 5V / 500mA   Built-in Battery Capacity  600mAh   Compatible With  N/A   Total Power  3W   Other Features  Interface: Mini USB / TF slot / 3.5mm; Support TF card up to 32GB; Can connect computer MP3 / MP4 cellphone etc; With voice broadcast function   Packing List  1 x Speaker1 x Audio cable (52cm)1 x Charging cable (61cm)1 x Chinese / English manual<img src="http://112.74.112.28/down/products/427741/427741_000.jpg">