Mono Headset USB 2.0 Cable (USB-A to USB-C) WDD60 Dongle Drawstring Bag Quick Start Guide DECT & Bluetooth Hybrid Wireless Technology; Acoustic Shield Technology 2.0; Advanced Level of Call Security Ultra-Long Range Connectivity; All-Day-Wearing Comfort; Hybrid Visual Busylight; Up to 32 Hours Talking Time Compatible with Mainstream UC