The Fitbit Charge 2 is a worthwhile upgrade from the original Charge HR. With better wristbands and a larger display, the Charge 2 offers more features like notifications and GPS tracking through your phone. The heart rate tracker is accurate and reliable, making it one of the best mid-range activity trackers on the market. The only flaw is the lack of a battery indicator on the display. Overall, the Charge 2 is worth the money and a great purchase decision for fitness enthusiasts.