High-Quality Material: This time lock box is made of plastic material, strong, durable, and easy to clean. Versatile Lock Box: The time lock box effectively helps to control and manage your time, controls mobile phone addiction, prevents excessive smoking, reasonably controls your snack time, controls toys and game controllers for children to provide a new way to help your child develop good habits. Unlocking Design: No complex operations, just set the time, once the set time is reached, the lock box will automatically open. Once locked, it cannot be opened, so please set a reasonable time. Please Note: Setting time - 999 hours 59 minutes 59 seconds, the shortest - 1 minute, automatically opens when the set time is reached. Prevent Smoking Addiction: Use this airtight timer box to develop good habits and lock away addictive items such as cigarettes, toys, mobile phones, snacks, etc. Color: White Material: plastic Size: 15cm x 16.5cm Package Contents: 1 x Time Lock Box Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.