Brand POWEREAL Model M2 Type Mini Colors Silver Quantity 1 Material Aluminum alloy + ABS Internal Memory NO Memory Card Type Micro SD(TF) Max Extended Capacity 32GB Media Format MP3 / WMA Total Power 5W Impedance 3 ohm Signal to Noise Ratio(SNR) 95dB Sensitivity 0.5% Channels 1 Remote Type N/A Interface USB 2.0 3.5mm audio input / output Radio FM Radio FM Frequency 87~108MHz AM Frequency N/A Power Supply Built-in Rechargeable Battery Built-in Battery 650mAh Plug Type N/A Other Features Super Bass Supports ISDN sound card; Supports unlimited number of series one by one; Portable and fashion design; Ripple Air flow protective cover mesh; Fully compatible with Android OS and iOS; Supports ISDN sound card; FM Radio full-automatic searching; 3.5mm audio input / output; Low-power protection; Stereo sound effect: Mega; Bass / Middle / Treble Stereo Certification CE / 3C Packing List 1 x Speaker 1 x USB cable (72cm) 1 x Audio cable (70cm) 1 x English user manual