The Plantronics CS50 Training Pack includes 2 Plantronics CS50 Wireless Headset Basic Bundles, an adapter connecting the two, and the Plantronics HL10 Handset Lifter.
This training pack gives you the flexibility of training someone on the phone without getting tangled in cords.
The adapter allows you to mute one or both headsets and the ability to speak and listen from both headsets.
Just like having two phones plugged into the same jack!
You'll be totally wireless, the CS50 gives you up to eight hours talk time and the wireless convenience to roam up to 90 meters while having secure conversations.