Fitbit's Charge 4 is the company's first tracker with built-in GPS | Mashable
What does this mean under alarms? This pic was taken at 9:20 am and my alarm is set for 7:30 am with smart wake on. The number of minutes doesn't match to
Fitbit Technology | Sleep
Fitbit Charge 4 review: No contest - Android Authority
Amazon.com: Fitbit Charge 3 Fitness Activity Tracker, Graphite/Black, One Size (S and L Bands Included) : Sports & Outdoors
Fitbit Charge 4 Gets Smart Wake And Dynamic GPS In New Update
Fitbit Enhances Smartwatch Experience with OS Update, Debuts Best Heart Rate Tracking Yet for Versa 2, and Delivers Expanded Premium Features | Business Wire
Charge 3 gets Smart Wake and other features via a firmware update
Screen Wake Fix For FitBit Charge 3 - YouTube
Fitbit's update for the Charge 4 will help you wake up at the "best time" - SoyaCincau
Fitbit Technology | Sleep
Fitbit Charge 4 vs Charge 3: Is the newest do-it-all fitness tracker a worthy upgrade? | Macworld
Fitbit Charge 4 Gets Smart Wake, Dynamic GPS, and an Adjustable Display Timeout – Review Geek