【Smartphone Addiction対策 × Abstinence Support】 Isolate your smartphone, cigarettes, and game consoles with a lock that lasts from 1 minute to 30 days. Dramatically improve your concentration, from digital detox to abstinence habits! 【Simple Operation, Immediate Implementation】 Lock settings are completed with just 4 button taps. Stress-free habit change, from students managing study time to working adults improving work efficiency. 【Durable Design × Space-Saving】 Made of special reinforced materials, it's resistant to impact from drops and can be stacked for storage. Compact design that doesn't get in the way, even on a small desk. 【Battery-Powered, Use Anywhere】 Operates on 2 AA batteries (sold separately). No need for a power outlet, so you can use it even when you're on the go. Won't get in the way, even when you're suddenly brainstorming ideas! 【Safe Design for Emergencies】 Can be unlocked with specific operations only in case of emergency contact. No need to worry about the lockbox becoming a risk to your life!