Liquid Image 5.0MP Underwater Digital VideoMask (Medium) Medium-sized dive mask with integrated 5-megapixel camera for capturing both video and still photos Operates to a depth of 65 feet (20 meters); great for snorkeling, spearfishing, and shark cage diving Tempered glass goggle lenses with crosshairs for lining up shots Store images on internal 16 MB memory, or add optional microSD/SDHC memory cards (up to 16 GB) Powered by two AAA batteries (lithium batteries included)