I see Dorian gave the same source I was going to give. There are many good products online, but the Alzheimer's store (www.alzstore.com) has a great variety. I typed "quartz clock calendar Alzheimer's" into my browser and got many hits, but wasn't horribly impressed. You could try that, however, since you know what you are looking for.   My mother had  two clocks and a watch (she didn't have Alzheimer's, but had dementia) in her nursing home room. One was huge digital numbers, one was a standard large wall clock. But she still got confused.   I tried several for my mother-in-law, too. It seemed that what was familiar was more important to her than the type of clock, as she couldn't follow time anyway. People get used to having to know what time it is, and so they want watches and clocks even when they can't use them.   I hope you find a good product. If you do, feel free to e-mail me. I like to know what's out there. Carol