Please Install Two Aaa Batteries For The First Use. The Rivets May Accidentally Fall Off During Transport, Causing The Lock Box To Close. You Need To Connect The Computer'S Power Supply Or Usb Power Port Via The Included Usb Charging Cable. When The Screen Is On, Press And Hold The Hm Button On The Control Panel To Unlock It. Made From High Quality Bpa-Free Materials, The Product Is Sturdy, Durable And Easy To Clean. 2 Aa Batteries Required (Not Included). For The First Use, You Need To Install 2 Aa Batteries Before Closing The Lock Box. Prevents And Controls Mobile Phone Addiction, Prevents Excessive Smoking, Reasonably Controls Snacks, Controls Children'S Toys, And Manages Medication Time. It Is Also A Piggy Bank. Unique Unlock Design: You Don'T Need Complicated Operations, Just Set The Unlock Time, Set The Time To Lock Anytime Between 1 Minute And 999 Hours (Up To Approximately 41 Days). When The Set Time Is Reached, The Lock Box Opens Automatically. Wide Range Of Applications: If You Are A "Delayed" Patient, You Can Perform Behavioral Corrections With A Timed Lock. Lock Addictive Items Such As Cigarettes, Medicine, Cell Phones Or Snacks. Suitable For Kitchens, Gymnasiums, Schools. Once The Lock Box Enters The Locked State, It Cannot Be Opened Manually. Please Manage The Time Reasonably. Delay Can Help You Build Good Habits And Break Bad Habits.