Yardworks Automatic Sprinkler Timer

I found this and thought it might be worth something. It doesn't have a battery but if you know what it is you can have it for free. AI said it's worth 50 bucks but im not selling someone anything I dont know if it works. Yardworks automatic sprinkler timer for your garden. It's programmable and has a rain delay function. This timer helps automate your watering schedule.