Metal Time Padlock, 99 HOUR SETTING: The maximum setting time is 99 hours and 59 minutes. After the official start, the countdown will begin, and after the time is up, the lock will be automatically unlocked. Note that you cannot open the lock manually until the time has expired. METAL BODY: The lock body is made of a durable space alloy. Using advanced technology, the lock body has a smooth surface and metallic texture and luster. LCD DISPLAY: There is an LCD screen with white backlight on the front of the timer lock, which is convenient for you to use at night . Three buttons at the bottom of the screen allow you to freely set the unlock time. ALARM SOUND: There will be a ticking sound when set, an alarm will sound at 00:00, or it can set to silent. After setting the time each time, press the lock button to start a 5-second countdown. Press any button again within the 5-second countdown to end all current actions, otherwise the timer lock will perform the countdown task.