With the Canon WP-DC21 waterproof case for the PowerShot G9, you can use your PowerShot G9 digital camera to take underwater shots at depths of up to 130' (40 m). Of course it's also ideal for taking worry-free pictures in the rain, at the beach, or on the ski slopes. You can use your camera's internal flash for lighting purposes. Or, use the internal flash to trigger a slaved external strobe like those made by Fantasea, Sea & Sea, Ikelite, Sunpak or Sealife. The camera has a underwater white balance setting for available light photography. +PLUS+ ACCESSORY KIT: - Canon WWDC1 Weight for Waterproof and All Weather Cases - Lithium Ion Battery - Olympus Silicone Grease - Olympus Silica Gel 5 Pack