http://www.bigearsheadphones.com.au/sennheiser-rs-170.html

Overview

Wireless headphones come in many shapes and sizes but few offer as pleasing a home cinemacentric performance than the RS 170. This wireless headphone sytem comprises of a pair of wireless headphones and a multi-purpose transmitter which also functions as an 'easy-charge' cradle and docking station. The RS 170 utilises Kleer's uncompressed digital wireless audio transmission, offering an effective range of 80m (line of sight), and can serve up to four pairs of headphones.

A weighty, full-bodied and detailed sound reproduction is what the RS 170 offers. Sporting a couple of switchable listening modes - Dynamic Bass and Surround Sound, it will let you enjoy pure thundering bass, a virtual surround soundscape, or both audio treatments for your music or movies!

The headphones' leatherette earpads and headband cushions provide for outstanding comfort while their closed,circumaural design prevents sound leakage