... . Fashion and environment design 2. Built-in rechargeable lithium battery 3. SD/USB/TF/FM 4. ODM OEM Android Robot mini ... , Frequency response: 90HZ-20KHZ2, Load power: 3W3, Distortion : ≤0.3%4, Speaker Unit: 40mmx25, SNR:> 85dB 6, Charging power: USB 5V 7 ...