A:AnswerIt's water-resistant, meaning that it's rain-proof and splash-proof. I've washed dishes and showered with it on with no issues, but I wouldn't swim with it on.
A:AnswerIf you have a valid email address, you can set it up through that. Every week, I get weekly stats updates sent to my email about what days I walked the most/burned the most calories, etc. You don't always need a smart phone!
A:AnswerThe small is for wrists 5.5 - 6.7 inches, and the large is form 6.7 - 8.1 inches, so if your wrist is 6.10 (or 6..1), then you will fit into a small. If you want the tracker to be looser, you might want to get the Large.
A:AnswerIt shows your present heart rate. Make sure you wear it as it is setting the area just above the wrist bone.
It tracks your heart rate while you exercise and also your resting heart rate.