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 and Nikon P340 side-by-side from the front, back and top in their relative dimensions. Pentax WG-3 has external dimensions of 124 x 64 x 33 mm (4.9 x 2.5 x 1.3″) and weighs 230 g (0.51 lb / 8.11 oz) (including batteries). Nikon P340 has external dimensions of 103 x 58 x 32 mm (4.06 x 2.28 x 1.26″) and weighs 194 g (0.43 lb / 6.84 oz) (including batteries).
Below you can see the front-view size comparison of the Pentax WG-3 and the Nikon P340. Nikon P340 is clearly the smaller of the two cameras. Its body is 21mm narrower, 6mm shorter and 1mm thinner than Pentax WG-3.
Here is the back view size comparison of the Pentax WG-3 and Nikon P340.
Now lets look at the top view comparison of Pentax WG-3 and Nikon P340.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Nikon P340 is significantly lighter (36g ) than the Pentax WG-3 which may become a big advantage especially on long walking trips.
Weather Sealing
Thanks to the weather-sealed body of the WG-3, you can use this camera with more confidence under conditions where there is risk of exposure to water and dust compared to the P340.
LCD Screen Size and Features
Pentax WG-3 and Nikon P340's LCD screens have the same diagonal size of 3.00 inches.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.