492 ft Dual-Mode Portable Headset: DECT+Bluetooth wireless headset with DECT dongle and carrying case for plug-and-play use across multi-devices(PC/phone/ mobile). Enjoy a 492 ft wireless range, partner for hybrid work, travel, or work-from-home Active Noise Cancellation Headset(ANC): 4 smart modesDeep ANC, Standard ANC, Transparency, and Off in various scenarios. 6-mic headphone system with AI Acoustic Shield Tech 3.0 delivers hybrid ANC and uplink noise cancellation, blocking mid- and low-frequency noise for clear focus Passive Noise Cancellation (PNC): Slanted oval earcups with noise-isolating memory foam provide hybrid work headset natural fit and physical noise blocking. 135 mm mic boom ensures accurate voice pickup for crystal-clear calls Power to Keep You Ahead: 1.5-hour fast charge via USB 2.0 cable, computer headset powers: 48h music (Bluetooth) / 19h (DECT), 32h talk (Bluetooth) /16h (DECT), 195h standby. Soft Foam, rotating earcups, adjustable headband bluetooth