Color Red + Silvery Grey + Multi-Colored Brand Tecsun Model D3 Material ABS + Aluminum alloy Quantity 1 Piece Shade Of Color Red Total Power 3 W SNR 30dB Frequency Response 80Hz~18KHz Impedance 4 ohm Channels 2.0 Interface 3.5mmOthersMini USB / TF card slot Remote Control Type wired Supports Card Type MicroSD (TF) Max Extended Capacity 8GB Radio Tuner Yes FM Frequency 64~108MHz Built-in Battery Capacity 1000 mAh Plug Specifications OthersUSB 2.0 Power Supply DC 5V Other Features Kindly designed easy to carry and operate; you can input radio frequency songs directly; MP3 breakpoint memory; LED digital display Packing List 1 x Player (16.5cm-strap antenna 9cm~29.5cm) 1 x USB data cable (55cm) 1 x Lithium battery (3.7V 1000mAh) 1 x Chinese user manual