The Plantronics CS70N + HL10 wireless headset combo with noise-canceling microphone & HL10 Lifter. Significantly reduces your distracting background noise. Combined with DECT technology - the CS70N delivers crystal clear voice clarity. A lightweight, over-the-ear design that combines sophisticated style with all-day wearing comfort. With the HL10 lifter you can answer your calls up to 300 feet away from your desk phone. Digitally-secure communications, and the lowest probability of interference with other wireless devices. Retail Price $399.95

What it has to offer:

• Mobile multi-tasking— moving between meetings, conferring with colleagues, or taking calls in offices—need not interrupt important calls up to 300 feet from your desk phone
• Lightweight and sophisticated over-the-ear design ensures all-day wearing comfort
• Now Noise Cancelling microphone
• Executives can follow business where it takes them—up to 300 feet from their desk phone
  • Answer and end calls while roaming around the home or office
  • The  Plantronics HL10 "mechanically lifts" your telephone's receiver and connects to the ringing line***
• Executives can answer calls remotely, so they never miss or interrupt a call while away from the desk phone - INLCUDES the Plantronics HL10 lifter in this combo 
• Voice-dedicated DECT 6.0 (1.9Ghz) technology provides uncompromised audio quality and the lowest probability of interference
• Patented Voice Tube combines discreet style and convenience with superior voice clarity
• No overnight wait: the headset is 80% recharged in 1.5 hours and fully recharged in less than three hours
• Approximately 6 hours of talk time makes it easy to stay connected and 28 hours of standby time (not being charged)

*** your telephone must operate with what is called "auto/default answer". This means that when you lift the receiver off of the hook it automatically answers the ringing line. IF you have to push a button to connect to the ringing line the lifter will NOT be compatible

Totally wireless, the CS70N™ is so lightweight and comfortable the user may forget they are wearing it, whilst its innovative, discreet design compliments even the most stylish office apparel. The CS70N can be used up to 300 feet from the desk/phone and is comfortably worn all day long.

 IMPORTANT: The CS70N is NOT compatible with cordless telephones (Try the CS55H). The following functions can not be performed remotely: transfer calls, switch lines, dial a number, put call on hold. You can perform all of these functions while using the CS70N, but you must do so by pressing the appropriate buttons on your telephone when back at your desk.