Sony MDR-RF840RK

Weight: 300 g
Design: Full size
Description: Design: full-size, device type: wireless headphones, acoustic design type: closed, operating time: 18 h
Additional Information: Battery type: AAA; Transmitter frequency range: 863.52 MHz, 864.02 MHz, 864.52 MHz; Range: 100 m; Wireless transmitter: yes; Data transmission channel: radio channel; Number of transmitter channels: 3
Working hours: 18 h
Device type: Wireless headphones
Mount type: Headband
Maximum playback frequency: 20000 Hz
Minimum repeatable frequency: 20 Hz
Technology: Dynamic
Membrane diameter: 40 mm
Type of acoustic design: Closed
Wireless connection type: Radio channel