About this item LB1021-Small HIGH QUALITY METAL: Unlike the other time lock boxes on the current market, VAYDEER time locking container is made of high quality metal, the net weight is 2.09 lb, not only sturdy and durable, but also NOT easy to be broken or damaged. In addition, the volume of the phone lock box is 2.6L, the size 8.35 x 3.15 x 6.07 inches is nice to fit in school cabinet shelves, classroom, home, kitchen, bedroom, office, etc. (PLEASE NOTICEthe upper lid is ABS plastics.) 2 WAYS OF POWER SUPPLY: Our phone lock box has 2 ways of power supply, which powered by 4 x AA batteries and external type-c port. Therefore, if the batteries run out of power during locking, VAYDEER time locking container still can be unlocked by external USB-C power supply in an emergency. Thanks to this design, it provides more convenience to buyers, no more worries about replacing the batteries often. SAFE LOCKED BOX: Its a creative and meaningful tool for those phone / gaming / electronics addicts in daily life, which can be used to keep tempting things locking up when your kids lack self-control. And our phone lock box is designed with child locking button, it can effectively prevent the kids from pressing the any buttons at random, which results in unnecessary locking. Whats more, its a good tool box to keep children from potentially dangerous things like knife, insecticide, pills etc. MULTIFUNCTIONAL PRACTICAL & USER-FRIENDLY DESIGN: Along with bigger function buttons and responsive customized digital display on it, our multifunctional user-friendly time lock box is very easy to use, and help us change bad habits such as quitting smoking, excessively drinking alcohol, overusing electronics, being addicted to video games or being distracted to cellphones at work, study or social activities, and it can be used as a medicine lock box too. BUILD GOOD HABITS: Overusing the mobile phones, gaming pads, excessively smoking and drinking alcohol, having too many snacks, chocolates, or other junk foods will have bad influence on your life and health. The locking duration of VAYDEER time lock box is up to 365 days, you can set a certain time of it to control yourself and keep you away from those bad tempting staffs. Lets start to build good habits and live a happier life from now on! Customer ratings by feature About this item LB1011-medium HIGH QUALITY METAL: Unlike the other phone lock boxes on the current market, VAYDEER time locking container is made of high quality metal, the net weight is 2.79 lb, not only sturdy and durable, but also NOT easy to be broken or damaged. In addition, the volume of the time locked box is 4.9L, the size 8.35 x 5.91 x 6.07 inches is nice to fit in school cabinet shelves, classroom, home, kitchen, bedroom, office, etc. (PLEASE NOTICEthe upper lid is ABS plastics.) 2 WAYS OF POWER SUPPLY: Our time lock box has 2 ways of power supply, which powered by 4 x AA batteries and external type-c port. Therefore, if the batteries run out of power during locking, VAYDEER phone lock box with timer still can be unlocked by external USB-C power supply in an emergency. Thanks to this design, it provides more convenience to buyers, no more worries about replacing the batteries often. SAFE LOCKED BOX: Its a creative and meaningful tool for those phone / gaming / electronics addicts in daily life, which can be used to keep tempting things locking up when your kids lack self-control. And our phone lock box is designed with child locking button, it can effectively prevent the kids from pressing the any buttons at random, which results in unnecessary locking. Whats more, its a good tool box to keep children from potentially dangerous things like knife, insecticide, pills etc. MULTIFUNCTIONAL PRACTICAL & USER-FRIENDLY DESIGN: Along with bigger function buttons and responsive customized digital display on it, our multifunctional user-friendly phone lock box is very easy to use, and help us change bad habits such as quitting smoking, excessively drinking alcohol, overusing electronics, being addicted to video games or being distracted to cellphones at work, study or social activities, and it can be used as a medicine reminder too. BUILD GOOD HABITS: Overusing the mobile phones, gaming pads, excessively smoking and drinking alcohol, having too many snacks, chocolates, or other junk foods will have bad influence on your life and health. The locking duration of VAYDEER phone lock box is up to 365 days, you can set a certain time of it to control yourself and keep you away from those bad tempting staffs. Lets start to build good habits and live a happier life from now on!