The DC1400 Pro has a CCD sensor type which is better than the MOS sensor type found on most cameras of a comparable type and age to it. CCD sensors produce high quality, low-noise images but consume a lot more power than CMOS sensors. CCD is the most common image sensor type used in digital cameras.
A CCD sensor type is actually the best sensor type across all waterproof cameras that were released around the same time as the DC1400 Pro.
A MOS sensor type is the worst sensor type amongst similar types of camera.
We think you might also be interested in some of the alternative cameras that have a CCD sensor currently available including because of it's better review score, the Panasonic Lumix DMC-FT3.