Brand Music Angel Type Portable Colors Blue + silver + black Quantity 1 Internal Memory No Memory Card Type TF Max Extended Capacity 32GB Media Format MP3 Total Power 3W Impedance 4 ohm Signal to Noise Ratio(SNR) >=70 ohm Sensitivity 420mV Channels 2 Interface Mini USB / TF / 3.5mm jack Power Supply Built-in rechargeable battery Built-in Battery 400mAh Other Features Supports MP3 format audio file;Compatible with TF card or micro SD card up to 32GB. Packing List 1 x Speaker 1 x Charging cable (80cm) 1 x English / Chinese user manual 1 x Strap (25cm)