BF-N22 Mini Bluetooth Speaker

Specifications standard accessories 1. Main unit 2. 2 in 1 cable( USB + Line in ) 3. User Manual    BF-N22 Mini Bluetooth Speaker      Technical Specifications 1. Work voltage: 3.3V~4.5 V 2. Work current: <30mA (Bluetooth module) 3. Transmit power: Class2 less than 4dbm, low radiation. 4. Spread spectrum: Frequency Hopping Spread Spectrum 5. Bluetooth protocol support: A2DP V1.2, AVRCP V1.4 profiles 6. Frequency range: 2.402-2 .480GHz (2.4GHz ISM Segment) 7. The receiver sensitivity: <-82dBm, BER <0.1% 8. Frequency range of the speaker: From 200 Hz to 20 kHz 9. Signal-to-noise ratio: ≥85dB 10. Speaker configuration: . 1.5 “ high-density dual-frequency magnetic horns         and 1*2.5W power 11. Battery: build-in 500MA lithium-ion battery 12. Play time: ~4.5hours after full charged 13. Charging voltage: DC5V 14. Full charging time: ~3hour 15. Dimension: 80mm(W)* 50mm(D) * 50mm(D)      Main function 1. Specific stereo Bluetooth music playing function. 2. Line-In audio input music playing function. 3. Blue Bluetooth pilot lamp indicates Bluetooth status (pairing, Task State, working etc) 4. Yellow Line-In pilot lamp stays lit during Line-in operation. 5. On-board volume controller 6. Push-button operation for Play, Previous/Next, Pause functions 7. Power switch on the speaker bottom. Turn it off when it is not in need.