SENNHEISER RS-140 Wireless RF Headphones With Switchable Dynamic Compression (Models: RS-140)

* Transmission range of up to 300' with 3 selectable RF channels
* Switchable compression ensures excellent speech intelligibility
* Balance control for optimum left/right volume adjustment
* High output level (adjustable) compensates for moderate hearing loss
* Self-learning automatic level control and automatic transmitter search tuning with memory function
* Frequency response: 18Hz-21kHz
* Operating time: approx. 23 hours
* Includes charging cradle, 2 AAA NiMH rechargeable batteries, 3.5mm mini-plug and 1/4" adapter
* L 12.50 in. x W 8.50 in. x H 5.00 in.
* warranty:2 years