Mini Round Bluetooth Card Speaker

1.Power supplier: lithium battery:3.7-4 .2 V? DC:5V ,600MA Li-ion battery

2.Work current: <30mA (Bluetooth module)
3.Work current: <400mA (power amplifier, Bluetooth )
4.Standby current: <3mA
5.Frequency range :2.401-2 .480 GHz (2.4GHz ISM Segment)
6.The receiver sensitivity: <-90dBm, BER <0.1%*SNR: 95dB

7.Support external TF card

8.Distortion: <0.2%
9.Frequency Response: 20HZ-20kHZ

Feature:
*Scope: <10 meters of wireless communication (consistent with the Bluetooth protocol specifications CLASS 2)
*Transmit power: Class2?? less than 4dbm, low radiation.
*Spread spectrum: Frequency Hopping Spread Spectrum
*Bluetooth version: compatible with V2.1, V2.0, V1.1 and V1.2 standard.
*Bluetooth protocol support: A2DP, AVRCP