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 TG-4 and Pentax X70 side-by-side from the front, back and top in their relative dimensions. Olympus TG-4 has external dimensions of 112 x 66 x 31 mm (4.41 x 2.6 x 1.22″) and weighs 247 g (0.54 lb / 8.71 oz) (including batteries). Pentax X70 has external dimensions of 110 x 83 x 90 mm (4.33 x 3.27 x 3.54″) and weighs 410 g (0.90 lb / 14.46 oz) (including batteries).
Below you can see the front-view size comparison of the Olympus TG-4 and the Pentax X70. Olympus TG-4 is 17mm shorter and 59mm thinner than Pentax X70 but it is also 2mm wider.
Here is the back view size comparison of the Olympus TG-4 and Pentax X70.
Now lets look at the top view comparison of Olympus TG-4 and Pentax X70.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Olympus TG-4 is significantly lighter (163g ) than the Pentax X70 which may become a big advantage especially on long walking trips.
Weather Sealing
Thanks to the weather-sealed body of the TG-4, you can use this camera with more confidence under conditions where there is risk of exposure to water and dust compared to the X70.
LCD Screen Size and Features
Olympus TG-4's 3.00" LCD screen is slightly larger than Pentax X70's 2.7" screen.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.