1. [Wide Compatibility] This time lock box is compatible with most mobile phone models on the market; Note: It does not support foldable phones or phones larger than 6.7 inches. It may not fit thick or heavy cases. Designed for those who are often distracted by their phones and stare at screens for long periods of time. 2. [Extremely Long Standby] The standby time of this mobile phone lock box can be set from 1 minute to 99 hours and 59 minutes, with a maximum operating time of approximately 50 days. After a full charge (2 hours), the standby time can reach approximately 90 days, meeting your diverse needs. The mobile phone lock box has a power supply and timer built into the mainboard, automatically unlocking when the timer expires. 3. [About Settings] Once locked, the mobile phone lock box cannot be opened. Please set the lock time appropriately. Please note: There is a 10-second countdown "hesitation period" before confirming the time setting. You can cancel the setting by clicking the power button once; otherwise, the lock be locked. Important: The mobile jail with a timer can only be used for emergency unlocking five times in its . Please use with caution. 4. [Lock Out Your Phone Addiction] This phone jail lock box has only one hole, ensuring you can wear earbuds to answer calls in an emergency. This mobile jail can keep you away from your phone, allowing you to effectively focus on work and school, rather than being addicted to the internet and screens, or spend more time doing meaningful things with family and friends. Our mini portable mobile phone box with a timer can help you develop better and healthier habits.