✓24-MONTHS - High-quality plastic, precision one-piece headband structure design ensures strong performance and long life of this landline phone headset, the coating will not lose paint, headband will not break. arama team is committed to customer service, 45 days free replacement or full refund for you, 2 years . ✓FLEXIBLE DESIGN - Online control does not require any additional settings, multi-function control keys let you easily adjust the volume, and callers get the most out of their call privacy. 5.3 feet of cable provides you with the flexibility to move around while talking to meet your multiple call needs, our call, center, headset perfect for SOHO, conference calls, telemarketing, consulting services, hospitals, homes and offices, call centers, and more. ✓ULTRA COMFORT - This office phone headset features ultra-soft protein foam ear pads to reduce pressure on your ears and head, an adjustable headband to fit all head sizes, and a headset that weighs just 3 ounces, the ultra-lightweight headset is designed to allow you to focus on your calls and provide you with all-day comfort. ✓OUTSTANDING AUDIO - Arama's desk phone headset with noise-canceling microphone effectively eliminates ambient noise to ensure your voice is heard, HD Call for crystal-clear calls, upgraded wideband sound provides a comfortable and enjoyable listening experience for calls and music, and Acoustic Shock Protection Circuit can better mitigates impact to protect your hearing at all times. ✓SEE COMPATIBLE PHONE LIST IN DESCRIPTION. ?NOT for Cell phones and Computers?Direct connect landline telephone headsets ONLY Compatible with Some Specific Phone Models from Polycom Mitel ShoreTel Plantronics Zultys Toshiba NEC Aspire Dterm Nortel Norstar Siemens ROLM Packet8. Compatible with Polycom: SoundPoint 300 301 335 430 450 500 (rev. E or later) VVX300 VVX310 VVX400 VVX450 and more deskphones listed in detail page. FOR Other Phones, pls Contact Us for Compatibility Guide or Advice.