1. Fashion and environment design 2. Built-in rechargeable lithium battery 3. SD/USB/TF/FM 4. ODM OEM Android Robot mini Speaker Specification: 1, Frequency response: 90HZ-20KHZ2, Load power: 3W3, Distortion : ≤0.3%4, Speaker Unit: 40mmx25, SNR:> 85dB 6, Charging power: USB 5V 7, Power supply: 550MH Lithium battery Packing Details: >> 50PCS/CTN >> Product Dimensions: 100*55mm>> Box Size: 110*20* ...