Never get stuck without power to listen to important breaking news. The AM/FM Solar Dynamo w/ Flashligh converts free solar energy into power for a rechargeable lantern, blinking light, and AM/ FM radio for indoor or outdoor use. These units also have a hand generator when solar power is not available, or they can use 2 ‘AA’ batteries. Great for power failures – NEVER NEEDS BATTERIES – IT ALWAYS WORKS. Both units perform the same functions, the Micro is more compact for tight storage situations.