CLEAR CALLS: 3.5mm Cell Phone Headset with Noise-cancelling microphone filters out background noise. Wideband audio delivers clearer conversations, while Acoustic Shock Protection Circuit protects from listening fatigue and loss. MOST COMFORT HEADSET: Monaural 3.5mm Mobile Phone headset with soft leatherette ear cushions guarantees a perfect fit. Ultra lightweight Truck Drivers cell phone headsets equipped with adjustable headband for all-day wearing comfort. ULTRA DURABLE HEADSET: Ergonomically designed call center headset made with high impact plastic to continuous use, and equipped with flexible microphone boom ensure more guaranteed life span. Wired cell phone headsets with Professional volume control and On & Off answer button. Shirt clip included. 3.5MM CELL PHONE HEADSET: COMPATIBLE WITH most Smart Android Phones and Computer Laptop Notebook Tablet iPad iPod PC MacBook with single 3.5mm Headset Jack. Great use for Skype Chatting, Truck Driver, Call Center, Home, School, Office, Business, Hospital, IT Department, Telemarketing, Tele-conferences, Webinar Presentations, Online Courses, Phone Sales, Customer Services Center, Telephone Counseling Services, Monitoring System for Teaching and more. (Voice to Text Dictation).