Shake for a Bright Future - My Review of the Multi-purpose Self-powered Flashlight

Today I got a good thing from my friend. A hand-crank flashlight. What? You think it's not very interesting? In fact, this is a very useful thing. Especially if you like traveling and outdoor activities, it's a must-have item. Just imagine, if you are outside and suddenly get lost or your car breaks down, and it's deep night and you have no lighting tools around you. Or the flashlight can't be used because the battery leaks due to long-term disuse... What should we do at that time? If you have a flashlight that doesn't need batteries at that time, it will play a big role. And this thing is more than just a flashlight. It's also a compass, a mobile phone charger, and an alarm!