The Watering Can is one of the many tools used for managing your farm in Harvest Moon: Animal Parade.
The watering can will be given to you by Hamilton at the start of the game.
The watering can is used to water crops. Crops need to be watered in order to grow. The watering can can only be upgraded after you have rung the Red Bell. The watering can can also be levelled up after a certain number of uses. Each time the watering can is levelled up, a greater area can be watered at once, which can be done so by holding and releasing the 'A' button.