Note 1: Once sticking it to one place; youd better not remove it to another place. Otherwise it will lose the stickiness and the plastic cover will break off. The proper use of 3aaa alkaline batteries can promise that Light will last for a long time and prolong the lifetime of the batteries. Note 2: when you change the battery, do not pull the plastic directly. Otherwise the plastic that holds the light in part will break off. You should Hold the plastic part and Rotate it in a clockwise direction, and then open it and install the battery. Stick and Click, quick and easy light anywhere;With self-adhesive sticker on the backside, can easily be stuck to wood, plastic, metal, glass, etc. No wiring required.Turn on/off light by pressing the top of the light; 3 Led bulbs inside, super bright white light. Energy efficient can last for 100,000 hours. No wiring required.Turn on/off light by pressing the top of the light; 3 Led bulbs inside, super bright white light. Energy efficient can last for 100,000 hours. 3 aaa Batteries required (not included).Package include:5 Pack.