The Olympus Tough TG-4 operates in the existing housing for the TG-3 with no modification required. Durable clear polycarbonate construction provides a unique view of the camera to ensure correct waterproof installation and confidence underwater. The camera installs with drop-in loading for quick and easy set up. Simply close the side latch and see the o-ring form a solid black, watertight seal. Large, ergonomic controls provide access to all important camera functions.