Name: Self-Regulating Timed Mobile Phone Lock Box Battery Capacity: 400 mAh Product Size: 21*9.3*2.3 cm Material: Plastic, ABS IMMEDIATE CHANGE: If your mobile phone habits are interfering with your health, relationships, and responsibilities, it may be time to make a change. 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 iPhone 14/14 Pro/14 Pro Max/13/12/11/X/XR/XS/8/7/6 Plus, Motorola, and other similarly sized phones. Note: Phones with thick or large cases may not fit. Note: Extra-large or unusually shaped phones may not be suitable for this device. MAXIMUM FOCUS: The opaque design prevents you from seeing screen notifications; you can answer or end calls through the clover-shaped window; no external screws, making it tamper-resistant. A powerful tool to support better daily habits. FAULT TOLERANCE: Press and hold the large button for 2 seconds to confirm the timer setting, followed by a 5-second countdown delay period. During this time, you can cancel the setting by pressing any button. If not canceled, the box 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 with caution. PORTABLE LONG STANDBY: Compact and lightweight, similar in size to a smartphone. Fully charged in 30 minutes, with up to 30 days of standby time. Easily carry the lockable storage box to the office, classroom, library, or study room. Product List: Self-Discipline Timer Mobile Phone Lock Box *1