Sensor | GPS, GLONASS, Galileo, Multi-frequency Positioning, SatIQ Technology, Garmin Elevate wrist heart rate monitor, Barometric altimeter, Compass, Gyroscope, Accelerometer, Thermometer, Ambient light sensor, Pulse Ox Blood Oxygen Saturation Monitor | Compass, Always-On Altimeter, third-gen optical heart rate sensor, Accelerometer, Gyroscope, and Ambient light sensor |