Developer's DescriptionBy youyou_devIt can Protect You, Scare the bad person off You can choose the alarm type, such as Car Alarm, Smoke Alarm, Submarine Alarm, Air-Raid Alarm.It can Protect You, Scare the bad person offYou can choose the alarm type, such as Car Alarm, Smoke Alarm, Submarine Alarm, Air-Raid Alarm.User guide:1. choose the alarm type in "Sound Settings"2. choose the alarm volume in "Sound Settings"3. press the middle red button when in danger