Last week i went to swim the data was correct but
I swim 1000m today but it show 700m
After that my calorie burn was 4000+
And my rest interval time show 9hr +
Firmware version 17.33



Last week i went to swim the data was correct but
I swim 1000m today but it show 700m
After that my calorie burn was 4000+
And my rest interval time show 9hr +
Firmware version 17.33



If you are doing anything but swimming, such as kickboarding or drills, you need to use Drill Mode for it to count it properly. You also have to swim the same stroke for the length of the pool, you can't start out with freestyle and switch to *** halfway down. I swim a lot and 99.99% accurate. I find it is usually user error when the swim is off, not to sound like an a hole but most people don't learn to use swim mode. Also, I'm not a big fan of auto rest; just hit lap instead.
This is a known issue. You may want to check this post for a kind of workaround:
forums.garmin.com/.../suggestion-manual-correction-of-interval-distances-in-pool-swimming-activity
Swam 4000 yds today with a bunch of different strokes and intervals, it didn't miss a length, I still say it's user error but people that don't swim much never believe me.