Poly CS510-XD Spare Headset 85T23AA Carbon Black P/N 216065-01 the HW520 has soft ear

the HW520 has soft ear cushions for all-day wearing comfort

Use with Supra Elite Wideband Headsets For Wideband Audio (Check Compatibility with Phone)

Previously Plantronics Spare Battery (CS540) 86180-01

Bluetooth USB Adapter

this spare headset top offers superior sound quality and long-range connectivity

Poly CS510-XD Spare Headset 85T23AA Carbon Black P/N 216065-01 the HW520 has soft earUpgrade your communication game with the Poly WH300 XD Over the Head 900 MHz headset. Designed for use with the CS510 XD 900 MHz headset system, this spare headset top offers superior sound quality and long range connectivity. Increase your productivity and efficiency with this must have accessory. Spare Replacement headset only. Poly WH300 XD, Over the Head, 900 MHZ For CS510 XD 900 MHz Spare Headset Top 85T23AA Headset WH300 XD, Over the Head, 900