Key Features: Connect to laptops, Bluetooth enabled desk phones, mobile phones, and tablets - connect up to 2 devices to help you multitask Multi-function button on ear for volume, answer calls or end calls Base connects with mini USB-to-USB cable to laptop / PC for charging Compatible with other soft clients on laptops and PCs, e.g. 3CX, Unify, Mitel, Avaya Optimised for VoIP and Unified Communications Big and soft Leatherette ear cushion Excellent Noise Cancelling Microphone Wideband audio for exceptional sound quality Technical Specification: Bluetooth 4.1, 10m indoor range 21 hours talk time 500 hours standby time Lithium Ion-polymer battery 300mAh typical What's in the box Headset, base, USB-to-mini USB cable, user manual