The M4 Smart Watch Band is a fitness tracker and wearable health device that monitors heart rate, blood pressure, steps, calories, and sleep, giving you complete insight into your daily wellness. It solves the problem of scattered health tracking...
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 analyzes reviews to verify trustworthiness.