Color Black + Silver Model K1 Material Aluminum alloy + plastic Quantity 1 Piece Shade Of Color Black Bluetooth Handsfree Yes Bluetooth Version V2.1 Operating Range 10m Total Power 3 W Channels 2.0 Interface OthersMini USB Microphone Yes SNR 90dB Sensitivity 80dB +/- 2dB Impedance 4 ohm Applicable Products IPHONE 5IPHONE 4IPHONE 4SIPHONE 3GIPHONE 3GSIPODIPADIPHONE 5SIPHONE 5C Radio Tuner Yes FM Frequency 87.5~108MHz Supports Card Type MicroSD (TF) Max Extended Capacity 32GB Built-in Battery Capacity 500 mAh Battery Type Li-ion battery Talk Time 4 Hour Standby Time 12 Hour Power Supply DC 5V Packing List 1 x Speaker 1 x Cable (47cm)