According to Rob ter Horst PhD. , the Huawei Watch GT 3 Pro is one of the most accurate optical heart rate sensors: Huawei Watch 2 (sawfish) has already been hacked by AsteroidOS: https://asteroidos.org/install/sawfish/ AsteroidOS, hack Huawei Watch GT 3 Pro for all physiologists to get free access to the sensor data of the most …