OK so I could not get it to turn-on and asked for a replacement because it would be perfect for grinding just the right amount of spice right before you cook. When the second one arrived just a day later, same issue and of course the instructions are written in Chinglish. Two of us finally figured it out. The five presses the Chinglish refers too do not turn it on. That just wakes it up. Then a long press afterwards starts it. Phew., best grinder ever, too. The freshness makes all the difference. It's well built and easy to use. Shaking it gives you a finer grind depending on what you are cooking. The glass jars are what makes it stand out. You can always see what you have in them while you are cooking. I do hope I can get more of their fitting jars. The second one sent out is already with my friend. So do not send out any refunds for them. Both are working well. Thank you