High-Quality Solid Metal - Unlike cheap and fragile plastic boxes, this product is crafted from high-grade solid metal, offering enhanced security and durability to protect your items and resist damage. Inner dimensions: 8.03 x 5.33 x 1.97 inches. Powered by Batteries or USB Connection - This lock box supports two power options. For regular use, it operates on 4xAA batteries (not included). It also features an external USB-C port, allowing you to power the device externally if the batteries are depleted, ensuring you can unlock the box when needed. Once Locked No Override - This is a self-discipline lock box. Once activated, the timer cannot be overridden until the set time ends. The lock box emits 7 warning beeps before locking begins. During this period, pressing any button will cancel the locking process. This provides a brief window to confirm your action—please double-check before finalizing the lock. Charger Cable Hole & Child Lock - Designed for convenience and safety, the lock box includes a built-in cable port, allowing you to charge devices while they are secured inside. The child lock function prevents accidental access, adding extra protection against unintended tampering by children. Help You Promote Self-Control - This time lock container helps manage screen time, reduce distractions, and support better focus and discipline. It can securely store cellphones, snacks, medication, keys, game consoles, TV remotes, and other personal items. A practical tool for adults, teens, students, and families aiming to improve productivity and self-control. Color: Black Material: Metal Package Contents: 1 x Time Lock Box Note: Light reflection and display differences may cause slight color variations between the image and the actual item. Measurement error allowance: +/- 1-3 cm.