Size and weight are big decision factors when you are trying to find the ideal camera for your needs.
In this section, we are going to illustrate the Pentax WG-3 GPS and Ricoh WG-20 side-by-side from the front, back and top in their relative dimensions. Pentax WG-3 GPS has external dimensions of 125 x 64 x 33 mm (4.9 x 2.5 x 1.3″) and weighs 238 g (0.52 lb / 8.40 oz) (including batteries). Ricoh WG-20 has external dimensions of 114 x 58 x 28 mm (4.49 x 2.28 x 1.1″) and weighs 164 g (0.36 lb / 5.78 oz) (including batteries).
Below you can see the front-view size comparison of the Pentax WG-3 GPS and the Ricoh WG-20. Ricoh WG-20 is clearly the smaller of the two cameras. Its body is 11mm narrower, 6mm shorter and 5mm thinner than Pentax WG-3 GPS.
Here is the back view size comparison of the Pentax WG-3 GPS and Ricoh WG-20.
Now lets look at the top view comparison of Pentax WG-3 GPS and Ricoh WG-20.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Ricoh WG-20 is significantly lighter (74g ) than the Pentax WG-3 GPS which may become a big advantage especially on long walking trips.
Weather Sealing
LCD Screen Size and Features
Pentax WG-3 GPS's 3.00" LCD screen is slightly larger than Ricoh WG-20's 2.7 screen.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.