- Compatible with Most Thick Cased Phones : Internal dimensions of approximately 18.3 x 8.7 x 1.5 cm (7.2 x 3.4 x 0.59 inches) make this phone jail box suitable for a wide range of devices including iPhone 16 series, 15 series, 14 series, 13 series, 12 Pro Max, 11, X, XR, XS, 8, as well as Samsung, Huawei, and more. Note: Some foldable phones may not fit. - Long Lasting Performance with Auto-Timer : Enjoy an impressive working time of up to 30 days on a single full charge. The timer can be set for up to 99 hours and 59 minutes, with a standby time exceeding 90 days. This feature helps you reduce screen time and enhance focus on work, study, and personal life. - Compact and Stylish Design : This portable and trendy phone lock box encourages good habits for users of all ages, including kids, students, and adults. It promotes respect for time and helps users regain their focus. - Dual Locking Options : Depending on your preference, you can position your phone screen-facing or cover-facing. When the screen is facing you, limited functionalities are available through small holes, excluding games. With the cover facing you, only emergency calls can be made via earphones or through the transparent small holes. - Emergency Call Support : If an important call comes in, you can easily use earphones, Siri, or the small holes on the transparent cover to answer or hang up. The phone lock box retains power for unlocking when the timer ends, even if the battery is depleted. This phone jail box is an effective solution for managing screen time, enhancing productivity, and fostering healthier habits.