2.5MM TELEPHONE HEADSET: 【NOT for Cell phones and Computers】This Phone Headset is compatible with Panasonic Cordless phones AT&T ML17929 VTech CM18445 RCA 25424RE1 Uniden Cisco Linksys SPA Grandstream Polycom Clarity XLC3.4 Yealink W52P Zultys Siemens Gigaset Cortelco Office IP, most Cordless Dect Phones and some old cell phones with standard 2.5MM HEADSET JACK. SEE MORE COMPATIBLE PHONE LIST IN DESCRIPTION. | Cordless Phone Headset for panasonic telephones, ONLY COMPATIBLE WITH SOME SPECIFIC PHONE MODELS WITH 2.5MM HEADSET JACK LISTED IN DESCRIPTION (include but not limited). Buy this 2.5mm plug phone headsets for office phones if you have one of phone models in list. Be clear this is a 2.5mm jack headset, FOR OTHER PHONES, Pls Contact Us for Compatibility Guide or Advice. 30-DAYS MONEY BACK GUARANTEE AND 1 YEAR WARRANTY BY WANTEK. | MOST COMFORTABLE HEADSET: Super lightweight office 2.5mm Cordless Phone headset with microphone for AT&T Cordless Dect Phones with adjustable headband to fit all head sizes, high quality and soft leatherette ear cushion enhance all-day wearing comfort. Professional Mic Mute / Volume Control built in. | HIGH SOUND QUALITY FOR CLEAR COMMUNICATION: Wideband Sound Wired 2.5mm Telephone Headset for Panasonic Cordless phones enables natural listening experience, features Noise Canceling Microphone to reduce background noise, Acoustic Shock Protection Circuit to protect your hearing. For Panasonic KX-NT136, KX-NT343, KX-NT346, KX-NT366, KX-T7603, KX-T7625, KX-T7630, KX-T7633, KX-T7636, KX-T7730, KX-T7735. | SUPER DURABLE: Precision design, quality plastics, unibody headband construction, superior quality microphone makes this hands-free call center headset with 2.5mm jack sturdier and more durable. Compete with Plantronics or Jabra heavy duty 2.5mm Headsets for Call Center, Telemarketing, Office & Cordless DECT Phones. Fits for Cisco Linksys SPA 303, 501G, 502G, 504G, 508G, 509G, 525G 512G 514G,525G2, CIT200, CIT300, CIT310, CIT400, SPA921, SPA922, SPA941, SPA942, SPA962.