To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyses reviews to verify trustworthiness.
As I don't wear a watch I like being able to clip my new Fitbit onto my trousers. The arm is longer than on the Fitbit Zip so that it is more secure. The product arrived a week earlier than expected - gotta be happy with that!