Here is a review left by a customer on a product. Would you say he was satisfied or dissatisfied?
Title: OK, but pricey for what you get
Review: I own about 20 of the 31805-4 and 31820-4 Gardena timers. All of them have worked for at least 12 months, but many have failed within 24 months. I don't like having to buy more of them, but there's really nothing else available. One additional "problem" with the 31820-4 is that when you choose longer watering times you must also choose longer periods between waterings and when you choose shorter watering times you must also choose shorter periods between waterings--in other words you can't choose short waterings with long periods between.
