|Fitbit Charge 3||Garmin Vivosport|
|Size||Device Dimensions: 35.8mm x 22.7mm x 11.8|
One size (small and large bands included)
|Width: 21.0 mm|
Thickness: 10.9 mm
|Material||Built of more lightweight material including an aerospace grade aluminum case and Corning Gorilla Glass 3 display. The housing and buckle are made of anodized aluminum.||Case material: fiber-reinforced polymer|
Lens material: chemically strengthened glass
|Battery life||up to 7 days||GPS mode: Up to 8 hours|
Smartwatch mode: Up to 7 days
|Weight||29 grams||Small/medium: 24.1 g|
Large: 27.0 g
|Sensor||Optical heart rate tracker, 3-axis accelerometer, altimeter, SpO2, vibration motor||GPS, barometric altimeter, compass, accelerometer, heart rate|
|Display||OLED full touchscreen, TFT||sunlight-visible, transflective memory-in-pixel (MIP), 72 x 144 pixels|
|Screen size||35.8mm x 22.7mm||9.7 mm x 19.3 mm|
|Colors||Multiple||Slate, Limelight, Fuchsia Focus|
|Other||NFC (Special edition)|
Connectivity: Bluetooth, WiFi
Charge 3 stores your stats and data for 7 days in between the times you sync your tracker.
|MEMORY: 7 timed activities, 14 days of activity tracking data|
|Heart rate||24/7 + HRV (premium subscription)||Yes|
|Stress & recovery||Yes|
|Respiration rate||Yes (premium subscription)|
|Galvanic skin response|
|Running features||Preloaded running profiles, GPS based distance/time/pace|
|Other||Guided breathing, Female Health Tracking||- all day stress tracking|
- gym workout tracking
- music control, find my phone, etc.
- Built in apps for running, cycling, cardio, walking, strength training, rep counting, stair-stepper.
|On-board music storage|
|Connected pay||Yes (special edition)|
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