High Sensitivity built in FM Antenna. Emergency LED light can be flashed for many days. It is great for Boating, Camping, Outdoor Activity and a must for Emergency / Disaster Kit. Ultra Bright LED bulb ( optional ) or Light bulb for Flashlight. Heavy Duty Dynamo Generator, to crank 3 minute, the Radio and Super Bright LED can work individually for over 30 minutes. Built-in NI-CD or NI-MH (optional) rechargeable Batteries. Powerful Dynamo -can charge to inlet or outlet Rechargeable Batteries and simply low voltage items such as Mobile Phone. Built in DC Input and DC Power Outlet. Backup Battery Compartment ( AA size x 3 ) Can be Recharged by External AC / DC Adaptor. Unit Dimension : 223 (L) x 68 (W) x 70 (D) mm