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-M5 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-M5 II has external dimensions of 124 x 85 x 45 mm (4.88 x 3.35 x 1.77″) and weighs 469 g (1.03 lb / 16.54 oz) (including batteries).
Below you can see the front-view size comparison of the Pentax WG-10 and the Olympus E-M5 II. Pentax WG-10 is clearly the smaller of the two cameras. Its body is 8mm narrower, 26mm shorter and 16mm thinner than Olympus E-M5 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-M5 II doesn't. Once you put a lens on E-M5 Mark II, its thickness will increase significantly.
Here is the back view size comparison of the Pentax WG-10 and Olympus E-M5 II.
Now lets look at the top view comparison of Pentax WG-10 and Olympus E-M5 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 (302g ) than the Olympus E-M5 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-M5 Mark II, the total kit will weigh much higher.
Weather Sealing
LCD Screen Size and Features
Olympus E-M5 II's 3.00" LCD screen is slightly larger than Pentax WG-10's 2.7" screen.
Moreover, Olympus E-M5 II sports a
Fully Articulated screen which you can change the angle and position of the screen almost freely, making it possible to shoot from waist or over-the-head levels, and especially very useful for shooting selfies and video. On the other hand, Pentax WG-10 has a fixed type screen which provides almost no flexibility in shooting positions compared to E-M5 Mark II.