I purchased 3 programmers. The ease of use is guaranteed. Two of them work wonderfully, while one presents a malfunction "from the cradle". Specifically, it works well for about a week, as long as the battery is new, and then it stops working and requires a new battery. I tried it with very good batteries as well. I suspect, without being able to say for sure, that the coil may be "tight" and the current may not be sufficient after a little use. I want to believe that this is an isolated failure, as I am generally satisfied with the other two. I did not use the warranty due to the low cost of the product.

Reliable developer with easy use. You must be present to start at the time you want, that is the only disadvantage.

The machine is unacceptable.. It has mechanical operation, you cannot program it to work at the desired time... So, if you want to water at 2 o'clock in the evening, you have to wake up at night to start it, let's say for half an hour you will wait and then you will stop the operation and it will be ready. If you want to use it multiple times during the day, you can't.. If you ask for something simple, the mechanical ones will do it for you