Electronic, easy and intuitive adjustment via rotary knobs. Start time can be postponed. Safe water stop function. Continuous flow of water possible through "ON" setting. High-quality and durable metal components. Particularly suitable for watering potted plants, as shorter and more frequent watering cycles can also be set. Further technical information: Voltage: 2 x 1.5 AAA batteries. Batteries are not included in the scope of supply.