This impressive, high-quality waterproof case for your S1 IS is a great choice for inclement, all weather shooting including rain, snow, beach, or watersports. The WP-DC20 can be submerged to an impressive 130 feet and allows accesses to all camera functions. The Canon WP-DC20 Waterproof Case is specifically designed to protect your Canon PowerShot S1 IS digital camera from sea water, rain, snow, and sand. Reliable and easy to use, this case offers new shooting possibilities and it can help you realize the full potential of digital photography. Shooting great underwater pictures is simple. Your PowerShot camera has many features that are specially suited to the underwater environment.