Water-resistant: able to resist the penetration of water to some degree but not entirely. There is a lot more to the term water-resistant, than most people realize. Water-resistant does not mean that you should shower or swim with your watch on.
The Octopus Watch is splash-proof. This means that light splashes of water will not damage it. The watch should not be used to while showering/bathing or while engaging in water related activities.