2.5MM TELEPHONE HEADSET: 【NOT for Cell phones and Computers】Compatible with Cisco Linksys SPA Polycom Grandstream Panasonic Zultys Gigaset AT&T ML17929 Vtech Clarity XLC3.4 Uniden RCA 25424RE1 Cortelco Yealink W52P Office IP, most Cordless Dect Phones and some old cell phones with standard 2.5MM HEADSET JACK. SEE MORE COMPATIBLE PHONE LIST IN DESCRIPTION. | Super Durable: Precision Design, Quality plastics, unibody headband construction, superior quality microphone makes this call center headset sturdier and more durable. Compete with Plantronics or Jabra heavy duty 2.5mm Headsets for Call Center, Telemarketing, Office & Cordless DECT Phones. Cisco Linksys SPA 303, 501G, 502G, 504G, 508G, 509G, 525G 512G 514G,525G2, CIT200, CIT300, CIT310, CIT400, SPA921, SPA922, SPA941, SPA942, SPA962. | High Sound Quality for Clear Communication: Wideband Sound 2.5mm telephone headset for Panasonic enables natural listening experience, features Noise Canceling Microphone to reduce background noise, Acoustic Shock Protection Circuit to protect your hearing | Most Comfortable Headset: Super Lightweight office 2.5mm Cordless Phone Headset Binaural for AT&T phone with adjustable headband to fit all head sizes, high quality and soft leatherette ear cushion enhance all-day wearing comfort. Quick Disconnect(QD) feature enables you to walk away without removing the headset. Professional Mic Mute / Volume Control built in. | ONLY COMPATIBLE WITH SOME SPECIFIC PHONE MODELS LISTED IN DESCRIPTION. Buy the item today if you have one of phone models in list. For other phones, pls Contact us for Compatibility Guide or Advice. 30-DAYS MONEY BACK GUARANTEE AND 1 YEAR WARRANTY BY WANTEK.