With the custom logo Fitbit Charge 4, there's no limit to how far you can go. This sleek, swim-proof tracker is packed with features that help you know your workouts and your body better - like built-in GPS, Active Zone Minutes, new exercise modes, and sleep tracking. Plus, with Fitbit Pay and up to 7-days of battery life, you get more convenience on the go and more inspiration to reach your fitness goals.