Wireless headset with Bluetooth wireless technology, Light, comfortable, and easy to wear, Up to 10 hours of talk time and up to 250 hours of standby time, Headset offers basic handsfree call functions: Answer/end calls with the push of a button, Redial, Mute, Switch between phone and handsfree modes, Adjustable earloop Technical Specs, Dimensions (excl. earloop) 61 x 28 x 10 mm (l x w x t), Weight 18 grams, Bluetooth compliance Bluetooth 1.2 specification with Handsfree 1.0 and Headset 1.1 profiles, Operating range Up to 10 meters, Paired devices Up to 8, one at a time, Charging time Less than 2 hours * Battery Rechargeable 100 mAh Lithium-Ion Polymer, Compatible Nokia chargers ACP-12, LCH-12.