Watering device equipped with a deflector having an uneven surface

A watering device for irrigation of non-circular areas is disclosed. The watering device comprises a deflector having an uneven curved surface designed to cause liquid meeting the deflector to reach a distance that changes respective of the uneven surface to cover an irrigation area; a spiral sector object connected to the deflector and providing an adjustable spray orifice for adjusting an irrigation pattern of the watering device; and a two-diameter tubular body connected to the spiral sector object and allowing the liquid to flow from a pipe to the uneven curved surface of the deflector.