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 Nikon 1 J4 and Samsung Galaxy NX side-by-side from the front, back and top in their relative dimensions. Nikon 1 J4 has external dimensions of 100 x 60 x 29 mm (3.92 x 2.36 x 1.12″) and weighs 232 g (0.51 lb / 8.18 oz) (including batteries). Samsung Galaxy NX has external dimensions of 137 x 101 x 26 mm (5.39 x 3.98 x 1.02″) and weighs 495 g (1.09 lb / 17.46 oz) (including batteries).
Below you can see the front-view size comparison of the Nikon 1 J4 and the Samsung Galaxy NX. Nikon 1 J4 is 37mm narrower and 41mm shorter than Samsung Galaxy NX but it is also 3mm thicker.
Here is the back view size comparison of the Nikon 1 J4 and Samsung Galaxy NX.
Now lets look at the top view comparison of Nikon 1 J4 and Samsung Galaxy NX.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Nikon 1 J4 is significantly lighter (263g ) than the Samsung Galaxy NX which may become a big advantage especially on long walking trips.
Also keep in mind that body weight is not the only deciding factor when comparing two interchangeable camera bodies, you also have to take into account the lenses that you will be using with these bodies. Since Samsung Galaxy NX has an APS-C sized sensor and Nikon 1 J4 has a smaller 1' sensor, Nikon 1 J4's lenses for a similar focal length and aperture will generally be lighter and smaller than the Samsung Galaxy NX lenses.
Weather Sealing
Unfortunately neither the Nikon 1 J4 nor Samsung Galaxy NX provides any type of weather sealing in their bodies, so you have to give extra care especially when you are shooting outdoors. If weather sealing is a must-have feature for you, check these sections: Top Mirrorless Cameras with Weather Sealing
LCD Screen Size and Features
Samsung Galaxy NX's 4.80" LCD screen is slightly larger than Nikon 1 J4's 3" screen.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.