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Samsung Galaxy Watch 4
Released:2021•OS:Wear OS 3 (upgradable to Wear OS 5 with One UI Watch 6)
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Specifications
Processor
Samsung Exynos W920 (5 nm, Dual-core 1.18 GHz Cortex-A55, Mali-G68 GPU)
Display
1.2" (30.4mm) Super AMOLED (396x396 pixels, ~330 PPI), Corning Gorilla Glass DX+
Battery
Battery Life:247 mAh capacity, Up to 14 hours (Usage time) / 24-40 hours (typical usage, depending on AOD/features) / Up to 55 hours (standby time)
Charging:WPC-based Wireless Charging (takes approx. 1.5 - 2 hours to full charge, 5W max)
Sensors
Samsung BioActive Sensor (Optical Heart Rate + Electrical Heart Signal + Bioelectrical Impedance Analysis - BIA), Accelerometer, Barometer, Gyro Sensor, Geomagnetic Sensor, Light Sensor, GPS (A-GPS, GLONASS, Beidou, Galileo), Blood Pressure Monitor, ECG (Electrocardiography), SpO₂ Monitor (Blood Oxygen), Sleep Monitor (tracks sleep stages, snoring, blood oxygen), Pedometer (tracks steps, distance,...
Water Resistance
5 ATM (water resistant up to 50m depth, not for diving or high-pressure water activities) + IP68 (dust/water resistant up to 1.5m depth for 30 mins) + MIL-STD-810G compliant (resists extreme temperatures, altitude, vibration, shock)
Connectivity
LTE (optional with eSIM), Bluetooth 5.0 (A2DP, AVRCP, HFP, HSP), Wi-Fi 4 (802.11a/b/g/n, dual-band 2.4GHz+5GHz), NFC, GPS
Physical Aspects
Design:Circular dial, Aluminum frame, flat design, Corning Gorilla Glass DX+ front, standard 20mm interchangeable straps (Hybrid Leather Band and Sport Band options), 2 push buttons
Weight:25.9g
Features
First Wear OS Samsung Watch (co-developed with Google, features Wear OS Powered by Samsung and One UI Watch), Bluetooth Calling (LTE variant with eSIM, supports calls from the wrist, needs initial pairing with eligible Android 6.0+ smartphone with GMS), AI Voice Assistant (Bixby, Google Assistant compatible), Body Composition Analysis (BIA,...
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