Sold as 1 Each. This mobile headset is great for everyday use with compatible electronic devices. 1-year manufacturer limited warranty. 35 hours of working time on one full battery charge. Compatible with PCs, laptops, and smartphones. Wireless technology provides unparalleled mobility with range up to 33'. Connect wirelessly via Bluetooth pairing or USB-A dongle. 135° rotating microphone so the headset can be used on either ear. Black on-ear design with high-comfort ear pads. Bluetooth operating range up to 300ft. Volume and control buttons. Rechargeable battery provides up to 35 hours of working time. USB-A dongle operating range up to 32ft. Adjustable headband and cushioned ear pad for added comfort.