Gardena 1866 Premium 6-Cycle Digital Solar Powered Water Timer/Computer C 1060 Solar Plus (Model #1866-U) Luxury model with powerful solar cell and solar rechargeable battery (included) Powerful solar cell charges the rechargeable battery even if the weather is overcast Programming can be tailored to individual requirements: Watering up to 6 times a day, watering duration up to 9 hours and 59 minutes Watering days can be freely selected GARDENA Rain Sensor electronic and Soil Moisture Sensor can be connected