Sony MDR-RF855RK

General characteristics (helmet)
Type Circum-aural headphones
Diaphragm 40 mm (dome-like)
Neodymium magnet
Molded headband Strip
Frequency Response 10-22 000 Hz
Function on / off automatic (auto power on when you wear the helmet)
Power Indicator Headphone Green LED lights
Adjusting the headset manual
DC2.4V (Ni-MH rechargeable battery)
Charging time of the battery Approximately 7 hours (full charge)
Charging method of the battery Place the headphones on the transmitter
Battery Approximately 18 hours (full charge)
Weight (approx.) 285 g (with battery)

General characteristics (transmitter)
Frequency Modulation FM Stereo
Max distance signal reception. 100 m
Distortion Less than 2% (1 kHz)
ON / OFF transmitter
Transfer display processor The green LED lights
Indication of battery on the transmitter
The red LED lights Power
AC adapter (12 V, 200 mA) Input (s) Audio
Analog input jack (L / R) stereo minijack analog input x1
Weight (approx.) 300 g
Dimensions (approx.) 166 mm x 94 mm x 126 mm (w / h / d)