*This portable ice maker has the option to make large or small ice cubes. Press the On/Off button once, the unit will start working in small ice cube mode by default, and the small ice cube indicator light stabilizes in green. During the ice making process, press the select button to switch to large ice cube mode; the large ice cube indicator will light up to make large ice cubes. Thick ice can be used for mixing drinks and other frozen beverages, and thin ice can be put into fruit juice, milk tea or used as smoothies.