No Batteries Are RequiredJust wind it up and set a time. The mechanical timer will work. Super cute timer compatible kids, Great compatible kitchen lover. A handy tool to have at the salon or home. Perfect compatible timing kids activitiesUnique DesignThis cute timer is made of plastic. Inside it made of precision steel. Unique shapes suitable compatible all ages. Easy to use and clean: wipe with a damp cloth.Cute Timer The charming design add an adorable point of interest to your kitchen gadgets. Super lovable accessory add more fun and practical element to your home. Cute timer compatible kids very much.Great Gift Choice Mechanical kitchen timer packaged by high-quality independent gift box. Each piece are under inspection becompatiblee shipment. Perfect gift just right compatible almost any occasion: Anniversary, Mothers Day or birthday compatible your girlfriend, boyfriend, family etc.Note Tip The timer already installed anti-twisting device, please do not counterclockwise directly from 0, otherwise you will damage the timer. it wont work and alarm. Rotate clockwise to 55 and do not over 0, then rotate counterclockwise to any time you need. The deviation is +/-5% in line with industry standards. All of mechanical time managers are not exactly accurate to the second.