Sony W510 weighs 119 g (0.26 lb / 4.20 oz) and has external dimensions of 96 x 54 x 20 mm (3.78 x 2.13 x 0.79″). Considering that the average weight of Compact type cameras is 188g, Sony W510 is a remarkably light camera for its class. Even better, with a thickness of only 20mm, it is also quite small, 8mm thinner than the average of its class.
Now lets compare the weight and thickness of Sony W510 with its main competitors:
Sony W510 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.