Once your mill has been filled then depress the button on the top to start grinding. This simple operation means this salt and pepper mill set is ideal for anyone who has limited dexterity in their hands whether they are young or old.Key Features:1.One Touch Operation2.Adjustable Grinding3.6 x AAA Batteries(Not included in the package)Package List:1/2 x Salt & Pepper GrinderWarm Hints:1. For the first time, clean it with cleaning agent and dry it, put it in a cool place to dry.2. Please do not use hard tools such as steel wire brush to clean it, so as to avoid the effect of scratching.3.Does not contain any spices and batteries in the package