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B20 watch + charging cable + manual
Technical Parameters:
1. Output power: 3W 2. sensitivity of the machine: 360mV
3. SNR: 80dB 4. Charging voltage: DC-5V 500mA
5. Frequency Response: 120Hz-20KHz 6. Bluetooth parameters: Bluetooth V2.1 + EDR
Features:
1. The effective speaker with acoustic design, superior sound quality
2. Bluetooth audio transmission and speakerphone calls
3. Bluetooth self-timer function, achieve listened to shoot
4. FM FM radio function
5. The voice prompts variety of working conditions
6. Support TF card player and supports WAV / mp3 and other formats
7. Built-in high-capacity lithium battery-powered, long life time
Precautions:
1. First use please charge more than 2 hours
2. The length of time with the players to play songs related to the size of the volume
3. Do not use this product on hold in hot, humid environments, but can not be affected by rain or strong impact
4. Native Bluetooth connectivity, will be different according to the connection you use Bluetooth devices vary,Or differences exist on compatibility, as well as self-timer function.
5.You can plug adapter or computer USB port DC5