This is the Plantronics Savi 8220 + HL10 Remote Answer System Bundlene.  Compatible to virtually 99% of all deskphones.  Savi 8220 is a binuaral (double ear) active noise canceling headset.  Triple (3) conectivity to deskphone, computer and Bluetooth cell phone.  range up to 300ft in a typical office.  The HL10 provides remote answering and ring notificiton anywhere in the office.  No matter where you are, you never miss a phone call.  Furthermore, you can listen to stereo music from your computer or mobile phone when you're not on a phone call.  If you're in a busy noisy office, the ANC (active noise canceling) speakers block out 90% of your backgorund noise, so you can focus on your phone call or music.

Key Features:

• Includes the Plantronics HL10 handset lifter 
• Triple connect with deskphone, PC,  or cell phone (via Bluetooth)
• Filter out background noise with active noise canceling (ANC) speakers
• Listen to stereo music and media 
• Long‐range wireless range (590ft line of sight, 200 ft in a typical office)
• DECT (1.9Ghz) security technology no Wi‐Fi interference
• 13 hours talk time and 50 hours of standby
• Switch between desktop phone, computer and smart phone with the press of a button

Plantronics Savi 8220 Package content:

• Includes the Plantronics HL10 handset lifter 
• Plantronics Savi 8200 base and charging cradle
• Plantronics Savi 8220 wireless headset
• USB Cable
• Telephone Interface Cable
• Power Supply

For more information, see Plantronics Savi 8220 datasheet