Comes With 2 *AAA Batteries The kitchen measuring scales consumes very low power, and the fully charged AAA battery is available for 3 months. With automatic shutdown function, when you don't operate it for a while, the screen will automatically turn off and save power.If the scale is not to being used for a long period, remove the battery.Note:Not waterproof, please keep the battery compartment dry 0.01 High Precision Resolution/Increment 0.01oz/0.1g, measuring range: 0.01oz to 11 lbs (0.3g to 5 kg), it's more widely used than 1g products, Suitable for many occasions, such as cooking, baking, weighing herbs.