Color Silver + Black + Multi-Colored Brand Tecsun Model X3 Material ABS + Aluminum alloy Quantity 1 Piece Shade Of Color Silver Total Power 3 W SNR Sperior 3uV Frequency Response 20Hz~20KHz Impedance 4 ohm Channels 2.0 Interface 3.5mmOthersMini USB / TF card slot Supports Card Type MicroSD (TF) Max Extended Capacity 32GB Radio Tuner Yes FM Frequency 64~108MHz Built-in Battery Capacity 1000 mAh Plug Specifications OthersUSB 2.0 Power Supply DC 5V 500mA Other Features Screen: 1.2"; Antenna: 29cm; Kindly designed easy to carry and operate; you can input radio frequency songs directly; LED digital display Packing List 1 x Speaker (antenne 9cm~29.5cm) 1 x USB data cable (52.5cm) 1 x Lithium battery (3.7V 1000mAh) 1 x Chinese user manual