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 S3700 and Canon ELPH 350 HS side-by-side from the front, back and top in their relative dimensions. Nikon S3700 has external dimensions of 96 x 58 x 20 mm (3.78 x 2.28 x 0.79″) and weighs 118 g (0.26 lb / 4.16 oz) (including batteries). Canon ELPH 350 HS has external dimensions of 100 x 58 x 23 mm (3.94 x 2.28 x 0.91″) and weighs 147 g (0.32 lb / 5.19 oz) (including batteries).
Below you can see the front-view size comparison of the Nikon S3700 and the Canon ELPH 350 HS. Nikon S3700 is 4mm narrower and 3mm thinner than Nikon S3700 but they have the same height of 58mm.
Here is the back view size comparison of the Nikon S3700 and Canon ELPH 350 HS.
Now lets look at the top view comparison of Nikon S3700 and Canon ELPH 350 HS.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Nikon S3700 is significantly lighter (29g ) than the Canon ELPH 350 HS which may become a big advantage especially on long walking trips.
Weather Sealing
Unfortunately neither the Nikon Coolpix S3700 nor Canon PowerShot ELPH 350 HS (IXUS 275 HS) 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 Compact Cameras with Weather Sealing
LCD Screen Size and Features
Canon ELPH 350 HS's 3.00" LCD screen is slightly larger than Nikon S3700's 2.7 screen.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.