Headset (single-ear) lightweight, tailored to the needs of businesses, providing a class-leading audio experience. Made by POLY (formerly Plantronics Plantronics) in the USA. The Blackwire 3300 series is the best in its class... Superior Sound Quality Experience exceptional sound. Perfect for voice, music, and multimedia. Advanced Connectivity Manage calls on your favorite devices with a comfortable and durable wired headset. All-Day Comfort + Portability You can relax and talk, knowing your headset won't fall off. The lightweight metal headband is durable and adjustable to fit the user. The faux leather ear cushions fold flat for easy portability. Wearing Style For those who want richer, more immersive sound, the Hi-Fi stereo wearing style is available. The single-ear wearing style is for users who want to keep one ear open. Improved Call Quality Dynamic EQ optimizes sound quality during calls. Abundant Connection Options Improved device connectivity: Connect to a PC with a USB-C cable with a USB-A adapter, and to a mobile device or tablet with 3.5 mm1. Comfort and Design The lightweight metal headband is durable and can be customized for comfortable wear. I threw away the box, but it's brand new and has never been taken out of the bag. I purchased it in New York in April 2025, but I have no opportunity to use it, so I am selling it.