Way wrong calorie count for tracked activity

Depending on the watch model, also the HR Varibaility (detecting the lactic threshold) and/or the average Resting HR for given day, play role. So for example if you did not record your HR during the night or during the rest on that day, it may influence the calories calculation, because of the higher RHR.

Me too! I have been pretty consistent in calorie burn per activity for the last several months. Last week, my calorie burn dropped by 100 one day, then by another 100 the next. After a 45 minute intense met con boot camp, it said I only burned 138 calories. I go crazy hard on my workouts. There is no way that is correct.

It seems that I've had more and more issues the last couple of weeks. About 2-3 weeks ago, it kept burning my arm. That has stopped. Then the inaccurate calorie (and HR and intensity) started. Now the time is totally jacked up. It's been set manually. It's been synced with GPS. It's been allowed to set automatically. It is still showing 2 minutes off, and as the day goes on, it gets slower. It's my first Garmin brand. I've not even had this a year. Disappointed.

I've not even had this a year. Disappointed.

If the HRM is not all right, the Calories cannot be either. With so many problems, why don't you contact the Support or the dealer and ask for a replacement? The watch is still under the warranty.