Brand N/A Model T-221 Type Portable Colors Red + Grey Quantity 1 Material ABS Internal Memory NO Memory Card Type Micro SD(TF) Max Extended Capacity 32GB Media Format MP3 / WMA Total Power 3W Impedance 4 ohm Signal to Noise Ratio(SNR) 87dB Sensitivity 100HZ-18kHZ Channels 1 Remote Type N/A Interface 1 x TF-Solt 1 x 3.5mm AUX input 1 x 3.5mm Earphone Output 1 x Mini USB/DC 5V Radio FM Radio FM Frequency 78~108MHz AM Frequency N/A Power Supply DC 5V/ BL-5C Battery Built-in Battery include BL-5C(450 mAh) Plug Type N/A Other Features 50mm Loudspeaker Certification CE / 3C Keywords Loudspeaker Packing List 1 x Speaker 1 x Mini USB Charge cable (55cm) 1 x Strap (18cm)