BLAUX Wearable AC comes with three adjustments from low, moderate, to high. Regardless of what the weather conditions situation is, you do not need to be concerned in any way. It's really simple to use as well as charge. The LED light feature indicates the battery portion. Make use of a USB cable to charge it. The battery power timing runs for thirty hours. It's merely a great cool headphone lookalike that offers air that is cool. It's a filter which cleanses the air and collects all of the dust around. Read a detailed review here: BLAUX Wearable AC Reviews