Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
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 analyzed reviews to verify trustworthiness.
The first Casio of this model, I owned lasted for years and years: never did I have a problem. This replacement is due to age of the item. I love the simplicity of the item, the easy use, and the durability of wear.