Solution:RDA2.1
Bluetooth Version:V3.0
Audio-Frequency Range:280HZ-16KHZ
SNR:≥95dB
Distortion:≤0.5%
Support protocol:A2DP,AVRCP,headset,handsfree profile
Output Power:4Ω3W
Charging Voltage:DC 5V
Battery:3.7V/520mAh
Speaker Unit:40mm
Weight:223g
Bluetooth Version:V3.0
Function:Support TF,Support 3.5mm audio input,Hands-free call,Bluetooth music playing,Voice prompt,USB flash disk.