This timer can operate and ring with no battery required because of its mechanical design. The timer, which has magnetic design, can be firmly attached to the metal surface to bring you convenience.This timer is practical, which can be a good kitchen helper to help you control the cooking time and also be used to manage your study or working time to improve efficiency.Made of high quality plastic, it is lightweight, wear-resistant and durable to use.There are 8 styles for you to choose from. With cartoon animal shape, it can add color to your daily life.Help you learn time management, especially cooking, baking, reading, studying, running, yoga, facial beauty, coffee tea time and more. It is a great choice for family and friends as birthday gifts, Halloween gifts, or Christmas gifts. Item Name: Cartoon TimerMaterial: PlasticFeatures: Magnetic, High Precision, Loud Sound Size Details:A, L: 6.5cm/2.56", W: 6.5cm/2.56", H: 9.4cm/3.7"(Approx.)B, L: 6.5cm/2.56", W: 6.5cm/2.56", H: 9.4cm/3.7"(Approx.)C, L: 6.5cm/2.56", W: 6.5cm/2.56", H: 10.5cm/4.13"(Approx.)D, L: 6.5cm/2.56", W: 6.5cm/2.56", H: 10.5cm/4.13"(Approx.)E, L: 6.5cm/2.56", W: 6.5cm/2.56", H: 10.5cm/4.13"(Approx.)F, L: 6.5cm/2.56", W: 6.5cm/2.56", H: 10.5cm/4.13"(Approx.)G, L: 6.5cm/2.56", W: 6.5cm/2.56", H: 8.7cm/3.43"(Approx.)H, L: 6.5cm/2.56", W: 6.5cm/2.56", H: 8.7cm/3.43"(Approx.)Notes:Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Cartoon Timer