タイトルまたは説明

★ The brightest mode: 
It applies to study and work situation etc,working time is up to *0 hours.
★ Brighter mode: 
it applies to family work etc, working time is up to *0 hours.
★ Normal brightness mode: 
it applies to some social activity and walking etc, working time is up to *0 hours.
★ Dim light mode :
it applies to bedroom for lighting 
★ Flash mode:
when comes across emergency situation, it open this mode to get help.