IMPORTANT: Because of Android Policy, you need to MANUALLY TURN ON alarm when charging. The turn off is automatic. Sorry for this. Lets you know when your battery is fully charged, so you can unplug your phone/tablet. This will help you to save energy and protect your phone battery. Feature: - Setting vibrate and sound when battery fully charged. - Set alarm threshold for battery level is between 20 to 100 percent - Add setting start alarm only Galaxy Watch - Add setting auto stop alarm on phone when unplugged devices