The Jabra Engage 50 II - (50 II Link) USB-A UC Mono headset is designed for office and call centre use, with a focus on clear communication and comfort. Featuring a MEMS microphone with a sensitivity of -26 dB, this headset ensures high-quality audio capture. The sleek black design includes a boom microphone for convenient positioning and a headband form factor for a secure fit. With USB connectivity and optimized for UC usage, this headset is a reliable and convenient choice for professionals looking for a high-performance communication tool. New and unused. Have used same model previously and is excellent - light and easy to wear with great audio quality. Has customisable button in the inline control.