I use a Dexcom CGM, and have found them to be very accurate. I use a Tandem X2 pump, which works as my receiver for the CGM. I also have an app on my phone where I can see my readings. I did use a watch a long time ago to see my readings, but I decided it wasn't necessary given I had the other ways to see what my sugars were doing.
I know that Dexcom has a list of compatible devices on their website. I look at that before buying a new phone, and before I got my watch, to make sure it will work with the CGM. So, a watch is doable. There are no stand alone watches that can read your sugar levels, but there are watches that will work with a CGM, if that is what you need.

Thanks Pam,
But I’ve procrastinated the use of any CGM system because my body doesn’t cooperate with it. I made an attempt in 2023 for 10 days and still have pain in my arm from when it was inserted. I really liked the amount of data that was gathered but as stated, my body can’t handle any internal or external devices very well. I appreciate your feedback and wish you the best.

Thank you, Joan. I was hoping for an alternate solution to my damaged fingers. Thanks again for the response.

Truthfully I have had no luck with the watches and have just resided that finger sticks are the only thing I can trust...sad to say