Size: 71 x 20mm Powered by 1 piece AA Alkaline battery (included) Provided adapter: Nokia, Samsung, Sony-Ericsson, Motorola and etc. Charge your mobile anywhere, anytime in emergency Battery life:1 to 2 hours (talking time) Standby time:10 hours There is a hole at the bottom of the charger, can use as a keychain There is a LED lighting when chargering