The SeaLife DC1400 Pro has a better sensor type than most digital cameras of this age and spec. This SeaLife digital camera has a CCD sensor type, whereas most waterproof cameras that were released more than two years ago have a MOS sensor type. 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.
This camera's sensor type (CCD) is actually the best sensor type across all similar spec digital cameras that have been available for around the same time as the DC1400 Pro.
The worst sensor type across comparable types of camera is MOS.