Model BL-03 Quantity 1 Color Blue Bluetooth Version V2.1 + EDR Operating Range 10 meter Compatibility V2.0 + EDR Microphone Yes Channels 2.1 Total Power 3W Impedance 4 Signal to Noise Ratio(SNR) >95dB Sensitivity 150Hz~20KHz Supports Music Format MP3 Power Supply Built-in Battery Built-in Battery Capacity 1000mA Compatible With Support Iphone / Ipad and other mobile phones with Bluetooth function Other Features Support TF card up to 32GB; Double audio decoding Packing List 1 x Bluetooth speaker 1 x Micro USB data cable (50cm) 1 x English user manual