The Sharper Image Car Kit with Bluetooth Headset Option Amazing sound quality Headset Features: Easily pairs with Bluetooth enabled phones. Up to 5 hours talk / 150 hours standby time One touch answer, end and redial. Includes ear hook and 3 silicone ear cushions (S,M,L). Dock Features: Plugs directly into car's cigarette lighter (No batteries or charging cables required) Adjustable, tilt head fits virtually every car's cigarette lighter, Dock the headset for hands-free speakerphone conversations, High power speaker with adjustable volume control Unique design charges the Bluetooth headset when not in use