* Please make sure the rubber O-ring is in place before recapping the light and twist the light until it can not be twisted any further, to make it fully waterproof before putting underwater.
* If you don’t use for following long time, pleae remove batteries, it will help save power and protect led bulb.* Not applicable in deep water,the max depth to reach is recommend to be less than 2 feet.
* Please dry it up each time when you replace battery.