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. What this timer can offer you is that it 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. It is constructed of plastic material. The length of this product is 8.7cm, the width is 6.8cm and the height is 4cm. It is suitable for cooking, baking, brushing teeth, reading, learning, running, yoga, face beauty, coffee tea time, etc. Item Name: Cartoon Timer Material: Plastic Features: Cartoon Elephant Shape, 360 Degree Rotating, Easy to Use Size Details: Size: 8.7cm x 6.8cm x 4cm/3.43" x 2.68" x 1.57" (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