The compact Dynamo First Aid Wind Up Crank Radio Torch can be a life saver in tough times. Take it with you when you're camping or simply store in your car for emergencies. One minute of winding (approximately 120 roundings) results in approximately 30 minutes illuminates 1 LED light and 25 minutes for 3 LED lights. The radio has both AM and FM frequencies to suit all users, includes a rechargeable lithium battery (3,6 V/800 mAH) and measures 63x50x143mm.