Sony W550 weighs 110 g (0.24 lb / 3.88 oz) and has external dimensions of 94 x 56 x 19 mm (3.7 x 2.2 x 0.75″). Considering that the average weight of Compact type cameras is 188g, Sony W550 is a remarkably light camera for its class. Even better, with a thickness of only 19mm, it is also quite small, 9mm thinner than the average of its class.
Here is the front and top view image of Sony W550 with the dimensions:
Now lets compare the weight and thickness of Sony W550 with its main competitors:
Sony W550 doesn't have any environmental sealings on its body so you got to be extra careful to protect it against water and dust. If you shoot under these conditions very often, consider checking Top Compact Cameras with Weather Sealing page.