Usage Tips:Material: This time lock box is made of plastic material, strong, durable and easy to clean. Versatile Lock Bin: The time lock box helps effectively controls and manages your time, controls cell phone addiction, prevents excessive smoking, reasonably controls your snack time, controls toys and gamepads of children to provide a way to help your child develop good habits. Unlocking Design: No complex operations, just set the time, when the set time is reached, the lock box will automatically open. When the box is locked, it cannot be opened, so please set a reasonable time. Please Note: The longest setting time - 999 hours 59 minutes 59 seconds, the shortest - 1 minute, the box will automatically opened once the set time is reached. Prevent Smoking Addiction: Use this airtight timer lock container to develop good habits and lock in addictive items such as cigarettes, toys, mobile phones, snacks, etc. Colour:black/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.