Precise watering on demand: The new Watering Unit WT 4 is especially easy to program. The removable display, the large control knobs and the clearly arranged panel makes the programming easy and effortless. The maximum watering duration goes up to 120 minutes. The watering starts and stops right on schedule and automatically to a preset time. Indicator light for programming and battery status. Size H12.5, W12, D11.5cm. Weight 0.33kg. 2 year manufacturer guarantee.