1, waterproof 2, patent 3, small volume, easy to carry, novel style 4, plastic ABS materials 5.CE/ROHS Product 1AAA battery;4LED headlights;Versatile: 2 white LED light, 2 red LED light, 2 red LED flash, off;Product Dimensions: 5.5cmX3.5cmX2.5cm;Product weight: 42g;Patent: the appearance of the patent, the use of new patents. 4 LED multi-functional plastic headlights