Model SLH-HY-L01 Quantity 1 Color Black + silver Bluetooth Version Bluetooth v2.1 + EDR Operating Range 10 meter Compatibility N/A Microphone No Channels 2.1 Total Power 3W Impedance 2.6ohm Signal to Noise Ratio(SNR) 96dB Sensitivity 75dB Radio N/A Supports Music Format MP3 Power Supply Built-in Battery Built-in Battery Capacity 450mAh Compatible With Computer iPod Iphone MP3 / MP4 player with Bluetooth function Other Features Super bass performance; Interface: 1 x TF card slot 1 x Mini USB; Supports TF card up to 32GB; Charging voltage: 5V Packing List 1 x Speaker 1 x Chinese / English user manual 1 x USB charging cable (48cm)