Garmin Vivosmart 4
The Garmin Vivosmart 4 measures everything from steps and calories burned, to heart rate and blood oxygen saturation levels.
Colors
The Vivosmart 4 comes in berry, black, gray, or light blue. You're looking at a gray unit with rose gold accents.
Screen
The OLED screen is a tad narrow, and not the most responsive to touch.
Notifications
You can get call, text, and push notifications from your apps via Bluetooth.
Battery Life
The Vivosmart 4 lasts about seven days on one charge.
Heart Rate Monitoring
Continuous heart rate monitoring results were accurate in testing.
Sp02 Sensors
It can also measure blood saturation levels during sleep thanks to its Sp02 sensors.