The Fitbit Charge 4 is an ideal choice for anyone who's just getting into running as part of a more active lifestyle, but does not want a fully-loaded watch with advanced tracking metrics. The Charge 4 has onboard GPS, which allows you to track your runs without the need to carry your phone. The Fitbit app will allow you to see all your workout stats clearly, day by day, and you'll receive a weekly roundup email to help you stay motivated. There’s also a basic intervals mode so you can set work and rest periods, although it doesn’t display your pace during the session so you’ll have to judge your efforts by heart rate, or keep tabs on time and distance and do some maths on the fly.