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-10 and Olympus E-M10 II side-by-side from the front, back and top in their relative dimensions. Pentax WG-10 has external dimensions of and weighs 167 g (including batteries). Olympus E-M10 II has external dimensions of 120 x 83 x 47 mm (4.72 x 3.27 x 1.85″) and weighs 390 g (0.86 lb / 13.76 oz) (including batteries).
Below you can see the front-view size comparison of the Pentax WG-10 and the Olympus E-M10 II. Pentax WG-10 is clearly the smaller of the two cameras. Its body is 4mm narrower, 24mm shorter and 18mm thinner than Olympus E-M10 II. As you can tell, actually this is not a fair size comparison since Pentax WG-10 has a built-in lens but Olympus E-M10 II doesn't. Once you put a lens on E-M10 II, its thickness will increase significantly.
Here is the back view size comparison of the Pentax WG-10 and Olympus E-M10 II.
Now lets look at the top view comparison of Pentax WG-10 and Olympus E-M10 II.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Pentax WG-10 is significantly lighter (223g ) than the Olympus E-M10 II which may become a big advantage especially on long walking trips.
Again, this comparison may not be very useful in real life as we are comparing the weight of a camera with a built-in lens to the body-only weight of an interchangeable lens camera. Once you put a lens on E-M10 II, the total kit will weigh much higher.
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 E-M10 II.
LCD Screen Size and Features
Olympus E-M10 II's 3.00" LCD screen is slightly larger than Pentax WG-10's 2.7" screen.
In addition to the size advantage, Olympus E-M10 II LCD screen also has a
Tilting feature where you can change the angle of the screen to make it easier to shoot from waist or over-the-head levels. On the other hand, Pentax WG-10 has a fixed type screen which provides less flexibility in shooting positions compared to E-M10 II.