1, the head of five bright LED light, bright light straw hat among 12 lighting; 2, the internal battery can either use an external power supply charge, you can also use the computer's USB interface to charge; 3, the bottom of the design of flexible self-locking hook 4, the hand self-power, no external batteries; green, environmental, economic, and security (L ordinary batteries prone to leakage when using an infinite loop); 5, steady and generous appearance, comfortable feel.