1、Self Locking Box: Cell phone lock box with timer encourage attention on work and study by keeping away from games, videos, and phone screens. Enhance efficiency in various activities, such as driving, sleeping, and reading. Ensure normal communicating with children by controlling their phone usage. 2、Stylish Design: Fine and fashionable appearance of the phone lock case comes with 3D wood grain film. Non transparent frame prevents distractions from notifications. Easy to answer calls through the cloud window. Screwless construction for durability. 3、Universal Compatibility: The size of the phone lock case with charger is about 21x9.5x2cm, compatible for 13, for 13 Pro, for 12, for 11, for XR, for XS, for 8, for 7, for 6 plus, and more. Note: Thick and large cell phones may not fit in the box, please measure the size with the box before you place an order 4、Fail Safe Mechanism: Vertical pressing and holding of dial for 2 seconds to set time with a 5 second countdown hesitation period. Emergency unlock by pressing dial for 10 seconds, but can only be used twice. Use with caution. 5、Portable and Long Standby: The cell phone lock box is compact and lightweight for easy carrying. Full charge in 30 minutes for 30 days of standby. Take the locked storage box to the office, classroom, library, or study room freely. Item Type: Cell Phone Lock Box with Timer Material: ABS Battery Capacity: 300mAh(Shipped with Built in Battery) Size: Approx. 21 x 9.5 x 2cm / 8.3 x 3.7 x 0.8in 1 x Phone Lock Box 1 x Charging Cable 1 x User Manual