Olympus PT-018 Underwater Housing for C740 & C750 Digital Cameras Explore your underwater surroundings at depths up to 131 feet Tight O-ring main seal with safety lock, along with stainless steel and nickel-plated brass hardware, help to protect the camera Great for diving, snorkeling, surfing, skiing, fishing, sailing, or even in certain industrial situations Stylish and durable transparent polycarbonate housing