Plantronics PL-EXPLORER-340 Bluetooth Headset,Small, lightweight design fits in either ear, 8 Hours continuous talk time, 240 Hour standby time,Lithium ion battery Compatible with most Bluetooth v1.1 and v1.2 capable devices. Talk Longer: Up to 8 hours of continuous talk time. One Touch: Access all controls with a single button. Easy to Use: Convenient, one touch controls. Freedom to roam up to 33 feet from your Bluetooth device