I have some doubts about the legitimacy of the first review posted for this shaker machine, so I wanted to take the opportunity to post some details about this machine that I know a potential buyer would want to know.1. The one I got came in a wooden create with Chinese markings. Looks like it went straight from China to Amazon to me. It was packed very well, and the package overall is surprisingly heavy. This machine is quite heavy and requires a solid table or workbench that won't move around when its operating.2. Mine came with 2 full size shakers, however I ordered some 350mL shakers separately from another seller because the ones that come with it are too large for my purpose.3. The manual is a mixture of Chinese and broken English. Quite funny to read, but it does fully explain how to use it properly.4. I purchased the 4 Year SquareTrade warranty when I bought the machine because although it seems well constructed, you just never know about long term durability when buying from some seemingly random Chinese company.5. There is a dial on the side of the machine that controls the time. Basically you install the shaker cups (the holders are secured with a set screw that allows you to adjust the size from 350mL (maybe slightly smaller) all the way to full size shakers. The machine does include a large allen wrench to adjust the set screws. Make sure the time is where you want it, then hit the green button. Shaking will begin and stop after the set amount of time. The way this is designed is great for people who will always be using the same time because you can just leave the timer set where you want it and the shaker machine will shake for that long every time you press the green button. The red button obviously will stop the shaking prematurely. The timer does NOT count down like a kitchen timer - it remains in the same spot while shaking, so it can be quickly used again for the next shake.Overall I'm pleased with the machine and it does exactly what I bou
qingwang 
