1.Super Bright: Wth CREE XPE LED, Shustar S-116 pen light could pump out up to 300-500 lumens which which runs with a 1 or 2 AAA cell (battery not included) . 2.Easy to Carry: Our key chain flashlight is small and light enough to slip into a pocket, backpack or purse. You can take it at anytime or anywhere. 3.Tough & Reliable: Made of military grade aluminum alloy & steel with hard-anodized finish led mini flashlight; anti-abrasive, drop-resistance. 4.Waterproof: Our flashlight is built with IP67 waterproof, now you can stop worrying about unexpected weather rain or snow.