•Working voltage: DC12V
•Material : Aluminium + ABS
•Working current: ≤300mA
•Microphone : 45dB±2dB 10Hz-15KHz
•Output power of sub-base Speaker: 3W
•Output power of master:2W
•Environment term: -10oC~60oC
•Cable Length : 2M silver
•Main base :153*78*40mm
•Sub-base: 80*22mm