Size and weight is a big decision factor when you are trying to find the ideal camera for your needs.
In this section, We are going to illustrate Olympus TG-860 and Pentax WG-3 GPS side-by-side from the front, back and top in their relative dimensions. Olympus TG-860 has external dimensions of 110 x 64 x 28 mm (5.12 x 2.52 x 1.1″) and weighs 224 g (0.49 lb / 7.90 oz) (including batteries). 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).
Below you can see the front view size comparison of Olympus TG-860 and Pentax WG-3 GPS. Olympus TG-860 is 15mm narrower and 5mm thinner than Olympus TG-860 but they have the same height of 64mm.
Here is the back view size comparison of Olympus TG-860 and Pentax WG-3 GPS.
Now lets look at the top view comparison of Olympus TG-860 and Pentax WG-3 GPS.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Olympus TG-860 is 14g lighter than the Pentax WG-3 GPS but we don't think this will make a significant difference.
LCD Screen Size and Features
Olympus TG-860 and Pentax WG-3 GPS's LCD screens has the same diagonal size of 3".
On the other hand, Olympus TG-860 features a Tilting screen
where you can change the angle of the screen to make it easier to shoot from waist or over the head levels whereas the Pentax WG-3 GPS has a fixed type screen which provides less flexibility in shooting positions compared to TG-860.