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 Nikon S9100 and Pentax WG-2 side-by-side from the front, back and top in their relative dimensions. Nikon S9100 has external dimensions of 105 x 62 x 35 mm (4.13 x 2.44 x 1.38″) and weighs 214 g (0.47 lb / 7.55 oz) (including batteries). Pentax WG-2 has external dimensions of 122 x 61 x 30 mm (4.8 x 2.4 x 1.18″) and weighs 192 g (0.42 lb / 6.77 oz) (including batteries).
Below you can see the front view size comparison of Nikon S9100 and Pentax WG-2. Pentax WG-2 is 1mm shorter and 5mm thinner than Nikon S9100 but it is also 17mm wider.
Comparison image of Nikon S9100 and Pentax WG-2 Size, Weight and External Dimensions - Front View
Here is the back view size comparison of Nikon S9100 and Pentax WG-2.
Comparison image of Nikon S9100 and Pentax WG-2 Size and Weight - Back View
Now lets look at the top view comparison of Nikon S9100 and Pentax WG-2.
Top View Comparison image of Nikon S9100 and Pentax WG-2 Size
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Pentax WG-2 is 22g lighter than the Nikon S9100 but we don't think this will make a significant difference.
Weather Sealing
LCD Screen Size and Features
Nikon S9100 and Pentax WG-2's LCD screens has the same diagonal size of 3".
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.