1. Built-in ultra-bright LED wick, concentrated beam and slide-up focus 2. Built-in 18650 Battery of 1,200mAh, supporting long working hours 3. Built-in precision control panel, for safe cycle charge 4. 3 adjustable modes including strong light, low light and SOS; meeting a variety of work needs 5. The shell adopts aluminum alloy material, crush resistant and shock proof