Here is the top view of the CoolStream BOOM! #3 is the battery power button. Slide this button over to the left to turn the battery on and slide it to the right to turn the battery off.
1. 3.5 mm AUX Jack – Connect audio cable (included) to AUX Jack of home or car stereo to the BOOM!Continue reading: How to turn on the battery of the CoolStream BOOM!?