防ぼう水すい性せい

noun, noun which may take the genitive case particle 'no'

waterproofness; water resistance

Refers to the property of being waterproof or water-resistant, often used in product descriptions.

• この時計とけいは防ぼう水すい性せいに優すぐれている。

  This watch has excellent waterproofness.

• 防ぼう水すい性せいの高たかい素そ材ざいを使し用ようしています。

  We use highly waterproof materials.