Functions:
1. Power generated by crank dynamo.no exterior adapter is needed.
2. 3high brightness LED lights with life more than 10,000h.
3. Blink & siren for emergency.
4. Powerful magnets, can adsorption in the automobile body, convenient and practical
5. safety belt, a hidden design and scientific amount, make the products more   full of human.
6. Safety hammer, emergency can break glass, get out safely
7. Can charge different mobil phones and digital products.