HIGH QUALITY METAL: Unlike other time lock boxes on the market, this time locking container is made of high-quality metal, providing a sturdy and durable design that is resistant to breaking or damage. The phone lock box has a volume of 2.6L and measures 8.35 x 3.15 x 6.07 inches, making it a convenient size for use in school lockers, classrooms, homes, kitchens, bedrooms, or offices.2 WAYS OF POWER SUPPLY: This phone lock box offers two power options, operating on 4 x AA batteries or via an external USB Type-C port. If the batteries lose power during use, the external power option ensures continued functionality.SAFE LOCKED BOX: This lock box serves as a helpful tool for managing distractions from phones, gaming devices, and other electronics, especially for children who may lack self-control. It features a child lock function that helps prevent accidental or unauthorized access by disabling random button presses.MULTIFUNCTIONAL PRACTICAL & USER-FRIENDLY DESIGN: Designed with large function buttons and a responsive digital display, this time lock box is easy to operate. It supports habit-building by helping limit the use of electronics during work, study, or social activities. It can also be used to store medicine or other personal items securely.BUILD GOOD HABITS: Excessive use of mobile phones, gaming devices, smoking, drinking, or consuming junk food can negatively impact health and daily life. This time lock box allows locking durations of up to 365 hours, supporting users in developing better routines.Color: White Material: Metal Size: 212 x 80 x 154.2 mm Package Contents: 1 x Timed Lock Box 1 x USB Cable Note: Light reflection and differences in display screens may cause slight variations between the color shown in the image and the actual product. Measurement may vary by +/- 1-3 cm.