-  Material : Plastic
-  Bluetooth V3.0+EDR,Support HSP,HFP,A2DP
-  Bluetooth transmission distance: 10M
-  Built-in 3.7V/400mAh lithium-ion battery; Play time: 4 hours(70% of the volume)
-  RMS:3W
-  THD: ≤10%
-  frequency range 90HZ-20KHZ
-  S/N: :   >75dB
-  Distortion rate:  ≤1% at 1w 1000HZ
-  40MM round shape , internal magnetic 4Ω/3W
-  External Connectors :Micro usb
-  D: 60*60*60mm
-  W:90g