A:AnswerYeah. It tracks sleep, my son uses it and it's linked to my phone. This way I'm able to see my son's sleep information. Here is a screen shot of what it looks like.
A:AnswerActivity trackers will pick up movement, not necessarily the type of movement. However, I'm not sure if this might be what you're looking for as it is made for kids.
A:AnswerIt comes with a charging cable that clips onto the back of the fitbit where the charging port is. When properly connected, the fitbit will vibrate and show a battery icon to indicate that it is charging.