This copy is for your personal, non-commercial use only. Distribution and use of this material are governed by our Subscriber Agreement and by copyright law. For non-personal use or to order multiple ...

Sensor Accelerometer, Gyroscope, Magnetometer, Ambient light, Optical heart rate, Barometer, ECG 3-axis accelerometer, 3-axis gyroscope, optical heart rate monitor, ambient light sensor ...

Maximum Operating Altitude GPS, GLONASS, optical heart rate monitor, 3-axis accelerometer, red and infrared sensors for oxygen saturation (SpO2) monitor, device temperature sensor, multipurpose ...

All products featured here are independently selected by our editors and writers. If you buy something through links on our site, Mashable may earn an affiliate commission. The Fitbit Versa 4 is an ...

We may receive a commission on purchases made from links. Fitbit is one of the most popular brands in the world for fitness trackers, now also making smartwatches like the Fitbit Versa 4 and Fitbit ...