I decided to just do a quick Crossfit workout. Popped the watch into the band wrapped around the bicep. Felt a little odd at first. Wanted to do a workout where I would have normally had the watch on my wrist and done alot of wrist flexion and wore wrist wraps over my watch.
Workout consisted of the following
3 set of 5 overhead squats
then
7 min AMRAP Ladder
3 Thrusters at 100 pounds
3 chest to bar pullups
6 Thrusters
6 ctb
9 thrusters
9 ctb
12 thruster
12 ctb
and so on until the 7 minutes was up.
You can see how it wraps around the bicep
Without this Action Sleeve my Apple Watch would be under the wrist wraps and I cant pull them snug enough to really benefit from the wrist wrap. This was awesome
Here is two charts comparing these two workouts. First one is with the watch on the wrist and the second is with the action sleeve. You can see the difference in the readings. I would say this is pretty good proof that having the watch in the action sleeve is almost list having a schosche Rythm + or another HRM strap on. The first image is showing that the sampling rate is every few minutes off and on.
This is the image from todays workout wearing the Action Sleeve. You can see the sample rates are more often and more constant.
This is my first comparison but it shows me the product makes sense and I am stoked to be using it. I am going to be a much larger review and video maybe and throw it up on youtube. Cant recommend this product enough. Great Job Twelve South