HP Poly CS510/510-XD/WH300-XD 900 MHz Top - Mono - Wireless - 350 ft - Over-The-Head - Monaural - Supra-aural - Noise Cancelling Microphone - Black 12NAGAR1UZ Features include orthogonal frequency-division multiple

Features include orthogonal frequency-division multiple access (OFDMA) and cellular optimization

combined with built-in active cooling

loading factory defaults or printing a self-test page

Elegant shelf accessory with wood grain for extra storage space

Amer Mounts EZSTAND allows you to clear up your valuable work space

HP Poly CS510/510-XD/WH300-XD 900 MHz Top - Mono - Wireless - 350 ft - Over-The-Head - Monaural - Supra-aural - Noise Cancelling Microphone - Black 12NAGAR1UZ Features include orthogonal frequency-division multipleCS500 XD SERIES A new addition to Plantronics legendary CS family for desk phone communications, the CS500 XD Series is a high quality solution for fitting more wireless headsets in an office environment. SUPERIOR COMFORT AND CALL MANAGEMENT Gain mobility multitask hands free up to 350 feet Audio controls for volume mute at your fingertips Conference in up to three additional CS500 XD headsets for enhanced collaboration CS540 XD CS545 XD offer an