Dimensions & Weight
Galaxy Watch4 40mm
40.4 x 39.3 x 9.8mm (Excluded the health sensor)
26g (Armor Aluminum, without strap)
1.2″ (30.4mm) Circular Super AMOLED (396×396)
Full Color Always On Display
Corning® Gorilla® Glass DX+
*Typical value tested under Samsung laboratory condition. Typical value is the estimated average value considering the deviation in battery capacity among the battery samples tested under IEC 61960 standard. Rated(minimum) capacity is 361mAh for Galaxy Watch4 44mm, 247mAh for Galaxy Watch4 40mm. Actual battery life may vary depending on network environment, usage patterns, and other factors.
*Battery time is based on our own laboratory measurements, and may vary depending on factors such as device settings, usage patterns and operating conditions.
Exynos W920 Dual Core 1.18GHz
Wear OS Powered by Samsung
1.5GB RAM + 16GB Internal Memory
*Actual storage available may vary depending on pre-installed software. RAM capacity may vary depending on model, color, and country.
Accelerometer, Barometer, Gyro Sensor, Geomagnetic Sensor, Light Sensor, Optical Heart Rate Sensor,
Electrical heart sensor, Bioelectrical Impedance Analysis Sensor
Compatible with Android 6.0 or higher, RAM 1.5GB above
*Device activation is only available after connecting to a smartphone that supports Google Mobile Services(GMS).
*Please refer to your device manufacturer to find out whether your smartphone supports Google Mobile Services(GMS).
*Compatible smartphones and available features may vary by region, carrier and device.
More details here.