There is not a timer on it, but it will automatically shut off when the rice is done. The way it works is, water boils at 212 degrees, and as long as there is water in the pan, the rice cooker will continue to cook. When the rice absorbs all of the liquid, the temperature will begin to rise. When the thermostat in the rice cooker senses that the temperature has risen above 212 degrees, the machine turns off the heater automatically and switches to the “keep warm” cycle. It's actually a very cool invention.
In this post, I am not only recommending the rice cooker, but a particular kind of rice, which is a brand called Royal Blend Whole Grain Rice, and the blend I chose was Texmati Brown & Wild Rice with Soft Wheat & Rye Berries (both pictures, above). I bought it at Publix. Go by whatever your particular rice cooker recommends, but I use the same amounts that I would if I were cooking rice the conventional way. I use chicken broth instead of water, and this time I added about 3 tablespoons of butter. It was truly the best rice I have ever eaten. Very nutty and flavorful. And 100% whole grain.
I served it with boiled shrimp, which was a nice combination, but I could have eaten just the rice.