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 Nikon L31 and Kodak M550 side-by-side from the front, back and top in their relative dimensions. Nikon L31 has external dimensions of 96 x 59 x 29 mm (3.78 x 2.32 x 1.14″) and weighs 160 g (0.35 lb / 5.64 oz) (including batteries). Kodak M550 has external dimensions of 98 x 58 x 23 mm (3.86 x 2.28 x 0.91″) and weighs 125 g (0.28 lb / 4.41 oz) (including batteries).
Below you can see the front view size comparison of Nikon L31 and Kodak M550. Kodak M550 is 1mm shorter and 6mm thinner than Nikon L31 but it is also 2mm wider.
Here is the back view size comparison of Nikon L31 and Kodak M550.
Now lets look at the top view comparison of Nikon L31 and Kodak M550.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Kodak M550 is significantly lighter (35g ) than the Nikon L31 which may become a big advantage especially on long walking trips.
Unfortunately neither Nikon Coolpix L31 nor Kodak EasyShare M550 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 Compact Cameras with Weather Sealing
LCD Screen Size and Features
Nikon L31 and Kodak M550's LCD screens has the same diagonal size of 2.7".
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.