Datasheet

MDR-RF850RK
Category Wireless headphones
Subcategory RF
General data 
Type Closed, dynamic
Driver unit 30 mm
Diaphragm PET
Magnet Ferrite
Frequency response 10-22.000 Hz
Volume control Rotary
Tuning Automatic
Auto ON/OFF function Power turns ON automatically
 when headphones are worn
 
Power ON indicator LED