Samsung Galaxy Fit3 Smartwatch - Grey (SM-R390NZAAXFA) - 1.6" AMOLED Display (256 x 402), 16MB RAM, 256MB Storage, Connectivity: Bluetooth 5.3, Sensors: Accelerometer, Barometer, Gyro Sensor, Optical Heart Rate Sensor, Light Sensor, Battery Capacity: 208mAh, Operating System: RTOS