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 Olympus VG-120 and Pentax WG-10 side-by-side from the front, back and top in their relative dimensions. Olympus VG-120 has external dimensions of 96 x 57 x 19 mm (3.78 x 2.24 x 0.75″) and weighs 120 g (0.26 lb / 4.23 oz) (including batteries). Pentax WG-10 has external dimensions of and weighs 167 g (including batteries).
Below you can see the front-view size comparison of the Olympus VG-120 and the Pentax WG-10. Olympus VG-120 is clearly the smaller of the two cameras. Its body is 20mm narrower, 2mm shorter and 10mm thinner than Pentax WG-10.
Now lets look at the top view comparison of Olympus VG-120 and Pentax WG-10.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Olympus VG-120 is significantly lighter (47g ) than the Pentax WG-10 which may become a big advantage especially on long walking trips.
Weather Sealing
Thanks to the weather-sealed body of the WG-10, you can use this camera with more confidence under conditions where there is risk of exposure to water and dust compared to the VG-120.
LCD Screen Size and Features
Olympus VG-120's 3.00" LCD screen is slightly larger than Pentax WG-10's 2.7" screen.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.