The Plantronics Voyager B4210 UC is a wireless Monaural headset with USB-A and Bluetooth connectivity for PC/MAC and Bluetooth devices. Dedicated call control buttons give you quick access to mute, answer, end and volume functions while enhanced voice prompts alert you to mute status, connection status and remaining battery life. Audio features include a Wideband codec for crystal clear calls and SoundGuard technology for protection against sudden audio spikes. Battery life is a whopping 12 hours and the battery with fully charge in a mere 1.5 hours. The Plantronics Voyager B4200 UC series are quick and easy to deploy and certified for many UC platforms including Microsoft Teams (MT). Features: Corded USB Headset Crystal Clear Calls 211317-01 Specifications: Dimensions: H:6.0 x W:16.0 x D:20.0 cm Colour: Grey Guarantee:2 years Material: Plastic Model Number: 100007186