Fitbit Charge 4 Black Advanced Fitness Tracker Color: Black Condition: New (open box ). Never used. Retail: $149 Comes with Large size band, charging cable. Built-in GPS Personalized Heart Rate Zones Workout Intensity Map Sleep Quality Analysis Spotify Control Up to 7-Day Battery Life Goal-Based Exercise Modes All-Day Activity Tracking Reminders to Move Automatic Exercise Recognition Water-Resistant Guided Breathing Sessions