Brand N/A Model N9 (SIG: https://www.bluetooth.org/tpg/EPL_Detail.cfm?ProductID=27890 ) Quantity 1 Color Black + silver Bluetooth Version v3.0 Operating Range 10 meter Compatibility 2.1 Microphone Yes Channels 1 Total Power 3W Impedance 4ohm Signal to Noise Ratio(SNR) 80db Sensitivity 82dBm Radio N/A Supports Music Format MP3 WMA WAY Power Supply Built-in battery Built-in Battery Capacity 600mAh Compatible With Iphone 4 / 4S / 5 Samsung and other smart cell phones Tablet PC Other Features Support TF card up to 32GB connector: 1 x TF / 1 x 3.5mm jack / 1 x Mini USB support hands-free speakerphone audio input. Working current: 200mA MIC sensitivity: -32db frequency: 2.402~2.480GHz data transfer rate up to 3Mbps. Packing List 1 x Bluetooth speaker1 x English user manual1 x USB data cable (70cm)1 x Audio cable (50cm)