The Poly Savi 8210 is a Monaural Wireless headset, that connects to your PC and USB enabled desk phones via Bluetooth.
 

Poly Savi 8210 UC Monaural Wireless Bluetooth Headset Features:

• Talk/standby time - Up to 13 hours talk, up to 50 hours standby
• Headset wireless range - Line of sight: Up to 590 ft/180 m; Typical office environment: Up to 180 ft/55 m
• Battery type - Rechargeable, replaceable, lithium ion polymer
• Charge time - Three hours
• Wireless Technology - DECT 6.0
• Hearing protection - SoundGuard DIGITAL: protects against sound levels above 118dBA; G616 antistartle (during calls) detects and eliminates any large sudden increase in signal level; Time-weighted average prevents average daily noise exposure from exceeding 85dBA*
• Microphone and technology - Noise canceling with close conversation limiting
• Weight - 115 g
• Voice and other alerts - Multiple voice prompts
• Standard UC and Certified for Microsoft options available
• Formerly Poly part numbers 219213-01 and 219212-01