Time-locked metal locker, mobile phone lockbox with timer, lockable container, self-locking security locker with time release [Sturdy and durable metal structure] Our time-locked locker is made of robust and high-quality metal, ensuring a long lifespan and secure storage for your belongings. Once locked, the key cannot be overwritten. [Battery or USB powered] Many customers complained that the phone lock would not open when the battery died. Our phone lock solves this problem. It is powered by 4 AA batteries (not included) and features an external Type-C port in case the battery runs out. Even if the battery dies while locking, the time-locked locker can be unlocked in an emergency via the external USB-C port. [Audible alerts and extendable lockout time] The time-locked locker beeps seven times when the lock is activated and once when the lockout time has expired. This serves as a helpful reminder of the locker's status. You can deactivate the audible alerts if needed. This portable jail allows you to extend the remaining time before unlocking. The maximum lock-out time is up to 365 days. Ideal for short-term goals and long-term commitments. Security Lock: A handy tool for cell phone, gaming, and electronics enthusiasts, allowing you to lock away tempting items when your child loses self-control. Our cell phone lock features a child safety lock that prevents children from pressing buttons at will and causing unnecessary lockouts. Multifunctional, Practical, and User-Friendly Design: In addition to larger function buttons and a responsive, customizable digital display, our multifunctional, user-friendly time lock is very easy to operate and helps you break bad habits at work or study. It can also be used as a medication lock for people who overuse electronics during social activities, are addicted to their cell phones, or are distracted by their phones. Color: Black Material: Metal Package Contents: 1 x Lock 1 x Cable Only the above items are included; other products are not included. Note: Light reflections and different displays may cause the color of the item pictured to differ slightly from the actual product. The allowable measurement error is +/- 1-3 cm.