Amazon.com: Garmin vívofit 4 activity tracker with 1+ year battery life and color display. Small/Medium, Black. 010-01847-00, 0.61 inches : Sports & Outdoors
Garmin vivosmart 4 review: If you don't need GPS, this is a great option
Garmin vívofit® 4 | Fitness Activity Tracker
Garmin Vivosmart 4, Activity and Fitness Tracker w/ Pulse Ox and Heart Rate Monitor, Black
Garmin vívofit® 4 | Fitness Activity Tracker
Garmin Vivofit 4 review - Wareable
Garmin Vivosmart 4 review: An affordable band for easy fitness, SpO2 data | Ars Technica
Garmin Vivofit 4, First Take: Great battery life, but no heart-rate monitoring | ZDNET