http://www.simplyheadsets.com.au/wireless/gn-netcom/gn9350-wireless-headset-system.html
Designed to be easy to use, the GN 9350 has a clear LCD display on the base unit, allowing you to set parameters like volume and audio output. The GN 9350 also has a massive wireless range of up to 100 metres, giving you complete freedom in your movements. The base can charge an optional spare battery, which can be hot-swapped to give you around-the-clock talk time.
GN 9350 has an amazing 6.8 kHz range, twice that of normal telephony. This high-definition sound not only results in increased accuracy in voice recognition applications, but also ‘face to face’ levels of detail during telephone conversations.
The GN 9350 features both state-of-the-art Digital Sound Processing (DSP) and IntelliTone processing to provide the best possible sound quality; while the inbuilt noise cancelling microphone provides optimum levels of accuracy.
http://www.simplyheadsets.com.au/wireless/gn-netcom/gn9350-