Material: This time lock box is made of plastic, strong, durable, and easy to clean. Versatile Lock Bin: The time lock box helps control and manage time, limit cell phone usage, reduce smoking, manage snack consumption, and restrict children's access to toys and game controllers to support the development of healthy habits. Unlocking Design: Simple operation—set the timer, and the box will automatically open when the set time is reached. Once locked, the box cannot be opened early; please set an appropriate time. Please Note: The maximum setting time is 999 hours, 59 minutes, and 59 seconds. The minimum setting time is 1 minute. The box will automatically unlock when the set time elapses. Habit Control: Use this timer lock container to store items such as cigarettes, mobile phones, snacks, and toys to help develop self-discipline. Color: Black Material: Plastic Size: 15cm x 16.5cm Package Contents: 1 x Time Lock Box Only the above contents are included; other items are not included. Note: Due to lighting and display differences, the color in the image may vary slightly from the actual product. Measurement error allowance is +/- 1-3cm.