About this item HD Sound Quality: This corded 2.5mm phone headset for Panasonic phone is suitable for office workers, SOHO, work from home or call center agents. Wideband audio technology with speaker frequency range 50HZ-10KHZ enable telephone headset delivering more richer and natural sound, plus ultra noise cancelling microphone to filter out background noise for clear 2-way communication. GREAT DURABILITY: MKJ telephone headset with 2.5mm jack is built with the high-end materials to ensure maximum durability and design quality to withstand the constant demands of all-day use in busy environments. The built-in reinforced cord will protect communication headset against office chair wheels, sharp objects on daily use. Stainless steel headband, superior quality speaker and noise cancelling microphone, reliable plastic parts make this headset durable enough even for 24/7 busy environment. All-day Comfort: Sturdy yet lightweight 2.5MM office phone provides all-day comfort. This phone headset has a slim, stylish, lightweight design and comes with soft ear cushions for added comfort. The monaural headset can be worn on either ear, adjustable headband and microphone boom arm let you find the perfect fit and don't cause pain or fatigue after long hours of wearing. And its quick disconnect feature provides walkaway convenience, enabling users quickly leave for a short time Hearing Protection: 2.5mm headset for home phones with hearing protection technology will protect users against acoustic injury and sudden sound burst, any sound above 118db is filtered out, such a quality headset is especially important for those who take a large volume of calls every day, including call center agent, customer service, telemarketing workers. 2.5mm Connector Compatibility: MKJ wired 2.5mm phone headset is fully compatible with office phones with 2.5mm headset jack, such as Cisco Linksys SPA 501G, 504G, 508G, 509G, 525G, SPA921, SPA941, SPA942, SPA962 etc, Panasonic KX-NT136 KX-NT343 KX-NT346 KX-NT366 KX-DT321 KX-DT333 KX-DT343 KX-DT346 KX-DT521 KX-DT543 KX-TG6531 KX-TG6532 KX-TG6533 Grandstream, Gigaset, Zulty etc. Please see in PRODUCT DESCRIPTION for compatibility guide or contact us directly.