Never needs batteries or bulbs.
30 minutes of bright light, from only one minute of cranking.
The compact design makes this unit convenient for carrying in your purse, glove box, pocket or briefcase. Includes 10 cell phone adapters.
(See cell phone adapters for Complete List) Size: 3″ L x 2″ W x 1″ H (7.62 x 5.08 x 2.54 cm)