Name: Self-Regulating Timed Mobile Phone Lock Box Battery Capacity: 400 mAh Product Size: 21*9.3*2.3 cm Material: Plastic, ABS Description IMMEDIATE CHANGE: If your mobile phone habits are interfering with your health, relationships, and responsibilities, it may be time to make changes. Studies have shown that a timed phone lock box can effectively increase the time you spend away from your phone, helping you focus on work, study, and life. FITS MOST CASELESS PHONES: The internal dimensions of the phone lock box are approximately 6.77 x 3.35 x 0.63 inches, compatible with 14/14 Pro/14 Pro Max/13/12/11/X/XR/XS/8/7/6 Plus, , and more. Note: Phones with thick or large cases may not fit. Note: Very large phones may not be suitable for this device. MAXIMUM FOCUS: The opaque design prevents you from seeing notifications on the lock screen. You can answer or end calls through the clover-shaped window. With no external screws, the box is difficult to tamper with—supporting stronger focus and better habits. FAULT TOLERANCE: Press and hold the large button for 2 seconds to confirm the time setting. A 5-second countdown hesitation period will follow. During this time, you can cancel the setting by pressing any button. If not canceled, the device will lock automatically. As a last resort, press and hold the large button for 10 seconds to unlock urgently. This emergency unlock function can only be used twice in the product's lifetime—use carefully. PORTABLE LONG STANDBY: Compact and lightweight, similar in size to a smartphone. Fully charged in 30 minutes, it can remain in standby mode for up to 30 days. Easily carry the lockable storage box to the office, classroom, library, or study room. Product List Self-Discipline Timer Mobile Phone Lock Box *1