Samsung's Galaxy Watch Active 2 (40mm) SM-R830 specifications and features: this is a 1.2"(30mm) device with a 360 x 360 screen resolution. The phone is powered by the Exynos 9110 soc with a 1.15GHz configuration. Memory is 768MB, with the device offering 4GB internal storage and of external memory. The Galaxy Watch Active 2 (40mm) features Heart Rate Monitoring (with 8 Photodiodes), Electrocardiogram (ECG), Accelerometer (measure up to 32g of force), Gyroscope and Barometer. The device measures 40 x 40 x 10.9mm and weighs Stainless: 37g Aluminium: 26g.