User manual Garmin Vivosmart 3 HR (English - 16 pages)
vivosmart HR+ | Activity Tracking | Garmin
The validity of activity trackers is affected by walking speed: the criterion validity of Garmin Vivosmart® HR and StepWatch™ 3 for measuring steps at various walking speeds under controlled conditions [PeerJ]
Garmin Vivosmart HR+ review: A fully-packed fitness tracker - P
Garmin vivosmart HR review
Garmin Vivosmart HR In-Depth Review | DC Rainmaker
Best Buy: Garmin Vivosmart HR Activity Tracker + Heart Rate Black 010-01955-06