Circular Fisheye Converter waterproof up to 20m (65 feet). Expands photographic expression with circular fisheye and diagonal fisheye capability. Lens is nitrogen gas sealed to prevent fog due to temperature differences and is dustproof. Diagonal fisheye by zooming the camera. CLA-T01 Adapter is included in this kit. FCON-T02 only compatible with the Tough TG-6.