... *2MOQ3000 piecesRemarkUsage: 1. press the ON / OFF switch, the laser light open. Laser light shoot from the hole2. loosen the ON / OFF ... switch, power will be automatically off. 3.switches control laser pointer, spin laser head at the same time, we will see 5 different ... patterns.Battery change: 1. screw out the laser head, then put into the battery. as + , - .2. screw in the ...