Brand N/A Model M001 Type Portable Colors Black + silver grey Quantity 1 Material ABS engineering plastic Internal Memory N/A Memory Card Type TF / U disk Max Extended Capacity 16GB Media Format MP3 Total Power 15W Channels 2 Remote Type Wireless Interface 1 x USB 2.0 1 x 3.5mm microphone 1 x 3.5mm audio input 1 x power port 1 x TF slot Radio FM Radio FM Frequency 87.5~108MHz Power Supply Built-in Rechargeable Battery Built-in Battery 3000mAh Plug Type 2-Flat-Pin Plug Impedance 4ohms Signal to Noise Ratio(SNR) >/= 80dB Sensitivity 53 +/- dB Other Features Support MP3: MPEG 1 / 2 / 2.5 / Layer3; Bit rate: 16Kbps~320Kbps; Loop Playback; 6 Super sound effects playback modes: POP / ROCK / Classic /JAZZ / Bass / Flat Packing List 1 x Amplifier 1 x Microphone (100cm) 1 x 110~240V power adapter 1 x USB cable (80cm) 1 x Remote controller (1 x CR2025 included) 1 x Strap (64cm)