So today I go outside and cut my grass for 40 minutes and my steps increased by 80 steps. Somehow it knows I did a bunch of movement and exercise because those numbers increased fairly close to accurate. I'm sure at a minimum I took at least 1,000 steps in 40 minutes of grass cutting with a human powered push lawn mower (Not a gas mower a pure push mower). That's less than 10 % accurate. Please also do say calibrate it with the outdoor walk suggestion, I've done multiple calibrations and it has not gotten any better. I've also tried the unpair/re-pair and the recalibrate and the step count is still way too low.