Sennheiser IS 150

Weight: 45 g
Design: Liners
Description: Design: in-ear, device type: wireless headphones
Additional Information: Data transmission via infrared channel; Wireless transmitter: yes; Data transmission channel: infrared channel
Sensitivity: 110 dB
Device type: Wireless headphones
Maximum playback frequency: 18000 Hz
Minimum repeatable frequency: 18 Hz
Wireless connection type: Infrared channel