ZAGG Boost Plus - Manual (Page 6)

5.1 Power Status:
Every time the Power Button is pressed, the power status advances one step in a
cycle as follows: Off -
> Standby -> On -> Off . . .
5.2 Automatic Power on/off:
When the speaker is in Standby mode, if music is played while the device is placed
on top of the unit in the correct position, the speaker will turn on automatically.
The Power Status is indicated by the Blue LED:
Status Blue LED
Power On Lights up
Power Off Off
Standby Flashes once every 3 seconds (approx.)
Music Playing Synchronized with the music
Battery Low Flashes 3 times every 4 seconds (approx.)