6 sets 

 The Plantronics CS55/HL10 Silver Ear-Hook Headsets are a stylish and functional option for those in need of a reliable telephone headset. With a sleek silver design, these ear-hook headsets provide noise cancellation and a built-in microphone for convenience. The ear-pad form factor and single earpiece ensure comfort during long calls, making them a versatile choice for home or office use. Made by the trusted brand Plantronics, these headsets offer quality performance and a modern aesthetic.

This is a certified refurbished unit direct from Plantronics. 

MODEL- CS55 VENDOR- PLANTRONICS

FEATURES- Wireless Office Headset System
The Plantronics CS55 wireless headset system combines the clarity
of traditional corded technology with the mobility of wireless,
so employees can move around the office to wherever business
takes them-without interrupting or missing a call. Continuing our
tradition as a technology leader, Plantronics presents CS55 as
the first headset in the United States to implement 1.9GHz UPCS
voice-dedicated wireless technology.
* Roam hands-free up to 300 feet
* Extended hands-free talk time - up to 10 full hours
* One-touch control over calls and volume
* Enjoy the flexibility of three convertible styles
* Ensure call privacy with digitally encrypted security
* Reduce the wait: battery recharges in three hours

-- SPECIFICATIONs ------------------------------------
TALK TIME - Up to 10 hours
STANDBY TIME - Up to 50 hours
RANGE - Up to 300 feet
OPER. FREQUENCY - DECT 6.0 (1.9 GHz)
SECURITY/PRIVACY- 64-bit digital encryption
HEADSET MIC. - Noise-Canceling
HEADSET WEIGHT - 26 grams
HEADSET CONTROLS- Volume, mute, call answer/end
BATTERY - Lithium Ion Polymer
Recharge Time 1.5 hours (80%)/3 hours (100%)
ENVIRONMENTAL - Operating Temp. Range: 40 to 110 degrees F
COMPATIBILITY - Most office or PBX-based telephones
WEARING STYLE - Convertible: over the ear, over the head, behind the head
(with accessory neckband).