How to use? 1,Add your herb into jars,less than half of it,then screw to connect to grinder. 2,Press the button 5 times continuously,you can see green light flash,then keep pressing the button and shaking for well grinding. 3,Release the button if you think it is ok. 4,Unscrew the jar and enjoy your herb. 5,Press the button 5 times continuously to power off after you use it. Package Content: 1 x Pollen Scraper 1 x brush 1 x 2.5"*2.6"Herb Grinder