Brand NEW Replacement HD Voice Handset for Polycom CCX Series 400 / 500 / 600 / 700 IP Phones - black color
*Also compatible with VVX Models 250, 350 and 450
- NOT Compatible with Polycom VVX Series IP Phones: 300 301 310 311 400 401 410 411 500 501 600 601 1500 & Soundpoint IP Series Phones: 335 450 550 560 650 670
- NOT Compatible with CCX 350