Name: Self-Regulating Timed Mobile Phone Lock Box Battery Capacity: 400 mAh Product Size: 21*9.3*2.3cm 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 spent away from your phone, helping you focus on work, study, and life. FIT 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, Motorola, and other similarly sized phones without thick cases. Note: Phones with thick or large cases may not fit. MAXIMUM FOCUS: The opaque design prevents distractions from screen notifications. You can answer or end calls through the four-leaf clover window. No external screws enhance security and tamper resistance. Supports development of healthier phone usage habits. FAULT TOLERANCE: Press and hold the large button for 2 seconds to confirm time settings, followed by a 5-second countdown period. 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. Emergency unlock 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. Convenient to carry to the office, classroom, library, or study room. Product List: Self-Discipline Timer Mobile Phone Lock Box *1