Sony MDR-RF855RK
| General Data | Driver unit Microphone Magnet Dimensions Frequency Distortion Audio input Impedance Type Batteries Power Weight (g) Color | 40mm (Dome Type) Electret Condenser Microphone Neodymium 166 mm 94 mm 126 mm (w/h/d) 10-22,000Hz Less than2% (1kHz) Analog Input Pin jack x1 (L/R), Analog Input Stereo Mini jack x1 Circum Aural DC2.4V (Rechargeable Ni-MH battery) AC Power Adaptor (12V,200mA) 285g (within battery) Black |
| Features | Wireless, with a maximum transmission range of 100m Simple to use charging base Powerful 40mm driver with neodymium diaphragm 18hr battery life or 28 if using Sony alkaline batteries Soft protection for the head and comfortable ear cushions |