Sadly inaccurate and unreliable
I bought the CKM and then looked at reviews. I wish I had have looked at reviews first. This CKM is a novel idea, but readings are woefully inaccurate (compared to finger prick blood tests) to the point of almost being useless. You can see general trends (graph line going up and down as you would expect after meals), but I would ignore the actual reading you get as it won't be correct. Application of the device was fine, and the adhesive was still strong after 9 days when I took it off as the sensor stopped working. It is supposed to last 14 days, but it didn't even make it to 10. I hope they can continue to improve the accuracy and reliability of this product.