A:AnswerIt's like a belt. It can be tightened and loosened. If your exercising it should be three finger tips away from the wrist bone for a good reading. To track heart rate, it should lay flat, a finger tip width above your wrist bone.
A:AnswerPer the Fitbit moderators on their website, a limited amount of BLACK Charge HR will be released in limited stores (possibly Best Buy) in the next few days. Call Best Buy for a better idea of when they will be available.
A:AnswerAccording to the Fitbit website, the Charge HR is available to the general public early 2015. Only pre-release models for review have been released.
A:AnswerYes. Just like Santa, it knows when I'm sleeping and when I'm awake. I think it's based on heart rate so I don't have to set it. It's pretty accurate most of the time. You still have the option of adjusting sleep times manually on the app too.
