Thank you for viewing. A dual-ear headset with noise cancellation, also equipped with authentic audio performance. It features a total of 10 microphones (5 on each side) for clear voice transmission. Certified for major UC platforms such as Zoom/WebEX. Up to 37 hours of continuous talk time. Fast charging: 15 minutes of charging provides 8 hours of battery life. Includes a USB-A dongle for convenient connection to a PC, and a USB Type-A charging cable. - Model Name: Evolve2 85 - Color: Black - Features: Active Noise Cancellation (ANC) - Battery Life: Up to 37 hours - Country of Manufacture: China USB-A ＜Condition＞ New, Unused Retail Price: ¥63,580 I purchased this as a spare, but I am selling it because I will not be using it. There are some minor scratches on the box due to home storage. Thank you for your understanding.