Galaxy Watch4 Classic Bluetooth (46mm),Bluetooth v5.0, Wi-Fi, Super AMOLED 1.4 (34.6 mm).Dual-Core 1.18 GHz. RAM (GB) 1.5, ROM (GB) 16. Accelerometer, Barometer, Gyro Sensor, Geomagnetic Sensor, Light Sensor, Optical Heart Rate Sensor, Electrical heart sensor, Bioelectrical Impedance Analysis Sensor, Hall Sensor. Dimensiones 45.5 x 45.5 x 11.0 mm, peso 52.0 g.