NFC - NFC   Bluetooth Version - Bluetooth v5.2   Size (Main Display) - 1.2"; (30.4mm)   Processor - 1.18GHz   ROM Size (GB) - 16   Sensors - AccelerometerBarometerBioelectrical Impedance Analysis SensorElectrical Heart SensorGyro SensorGeomagnetic SensorLight SensorOptical Heart Rate Sensor