To turn the Soundbrenner Pulse on or off, first twist the ring at least 1/4 turn – in either direction – and then touch the face with two fingers for two seconds.
When the Soundbrenner Pulse starts up, it will glow white and vibrate strongly for around half a second. The logo will stay lit until you turn the unit off. During shutdown, the Soundbrenner Pulse will glow white briefly. Once it is is no longer glowing, it is off.