Keep track of time and listen to your favorite tunes while exercising with this black Fitbit Charge 4 activity tracker. The built-in GPS tracks your outdoor runs, displaying the distance covered, while the intuitive touchscreen delivers vivid visuals and easy operation. This Fitbit Charge 4 activity tracker has a rechargeable battery that offers up to 7 days of use, and the swimproof design lets you log pool workouts.

Features:

• Measures calories burned and heart rate: To help you monitor multiple fitness activities.
  
• Comprehensive monitoring: Tracks time, activity, sleep activity, pace and sleep stages.
  
• Sleep tracking: Track sleep stages and review your in-app Sleep Score for an easy way to see how well you slept.
  
• Backlit LED display: For easy viewing in low-light conditions
  
• Fitbit Pay: Allows to make secure purchases at transit stations, retail stores and more.
  
• Active Zone Minutes: Alerts you to which heart rate zone you're in so you can see if you're working hard enough to reach your goals.
  
• Built-in GPS: Allows to see your pace and distance on screen during outdoor runs, rides, hikes and more.
  
• Water-resistant design: Lets you log pool workouts.
  
• Syncs to select Apple and Android devices: Such as iPhone, iPad, iPod touch and cell phones and tablets with Android for simple wireless communication.
  
• Rechargeable battery: Lasts up to 7 days and up to 5 hours when continuously using built-in GPS.
  
• Distance/speed/pace can only be shared on 3G or 4G devices.