Size and weight is a big decision factor when you are trying to find the ideal camera for your needs.
In this section, We are going to illustrate YI M1 and Fujifilm X-A7 side-by-side from the front, back and top in their relative dimensions. YI M1 has external dimensions of 114 x 64 x 34 mm (4.49 x 2.52 x 1.34″) and weighs 350 (including batteries). Fujifilm X-A7 has external dimensions of 119 x 68 x 41 mm (4.69 x 1.5 x 1.61″) and weighs 320 g (0.71 lb / 11.29 oz) (including batteries).
Below you can see the front view size comparison of YI M1 and Fujifilm X-A7. YI M1 is clearly the smaller of the two cameras. Its body is 5mm narrower, 4mm shorter and 7mm thinner than Fujifilm X-A7.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Fujifilm X-A7 is 30g lighter than the YI M1 but we don't think this will make a significant difference.
Also keep in mind that body weight is not the only deciding factor when comparing two interchangeable camera bodies, you have to also take into account the lenses that you will be using with these bodies. Since Fujifilm X-A7 has an APS-C sized sensor and YI M1 has a smaller Four Thirds sensor, YI M1's lenses for a similar focal length and aperture will generally be lighter and smaller than the Fujifilm X-A7 lenses.
Unfortunately neither YI M1 nor Fujifilm X-A7 provides any type of weather sealing in their body, 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
Fujifilm X-A7's 3.5" LCD screen is slightly larger than YI M1's 3" screen.
Moreover, Fujifilm X-A7 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, YI M1 has a fixed type screen which provides almost no flexibility in shooting positions compared to X-A7.