Garmin Vivofit 4, First Take: Great battery life, but no heart-rate monitoring | ZDNET
Garmin Vivofit® 4-010-01847-
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
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