I'm selling this because I gave up on it without ever using it after I bought it. 【Plenty of Storage for Smartphones and Tablets】The dedicated case has a large internal dimension of 305mm x 216mm x 18mm. It can lock up multiple "temptations" at once, such as 13-inch tablets, thick smartphone cases, game consoles, TV remotes, snacks, and cigarettes. The versatility to be used not only for smartphones but also in various aspects of life is appealing. *For the 13-inch iPad model, it is the perfect size for the main unit only. It will not fit in the "Concentration Lock" dedicated case when the Magic Keyboard is attached. *Food and cigarettes cannot be placed directly into the "Concentration Lock" dedicated case, so please store them in the dedicated case while still in their packaging. 【Freely Adjustable Timer Settings from 1 Minute to 99 Hours】The timer can be set in 1-minute increments from 1 minute to 99 hours and 59 minutes. It supports a wide range of uses, from a few minutes of focused work to long hours of digital detox. It's safe because you can use the emergency release up to 3 times. It is USB rechargeable and can be used for about 30 days when fully charged, and it can also be used while charging. *If the battery runs out while locked, the countdown to unlock will stop, so please avoid using it when the battery is low. Even if the battery runs out while locked, the countdown will restart when you recharge it. Please rest assured that you will not be unable to unlock it. 60h03474