Colors and Materials

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Overview

The Samsung Galaxy Watch 4 (released in 2021) marked a major platform shift by introducing Wear OS Powered by Samsung (co-developed with Google), paired with a powerful 5nm Exynos processor and advanced body composition analysis capabilities in a lightweight Armor Aluminum chassis.

A comprehensive overview of its design, specifications, software, and pricing details includes:

1. Design and Build

• Form Factor: Modern minimalist circular silhouette featuring a streamlined digital touch bezel and two tactile side push buttons.
• Dimensions & Weight: Available in compact 40mm (~25.9g) and larger 44mm (~30.3g) lightweight aluminum configurations.
• Materials: Tough Armor Aluminum metal frame protected by Corning Gorilla Glass DX+.
• Ingress Protection: 5ATM water resistance up to 50 meters, IP68 dust/water protection, and MIL-STD-810G military durability standards.

2. Display Technology

• Main Display: Circular Super AMOLED display with vibrant color reproduction and Always-On Watch capability.
• Resolutions: 396 x 396 pixels (40mm) and 450 x 450 pixels (44mm).

3. Performance & Software

• Processor: Powered by the high-efficiency Exynos W920 5nm dual-core processor.
• Storage & Memory: Equipped with 1.5 GB of RAM and 16 GB of internal flash storage for apps and music.
• Operating System: Wear OS Powered by Samsung with One UI Watch interface, giving access to Google Play Store apps.

4. Health, Fitness, and Body Sensors

• BioActive Sensor: Comprehensive 3-in-1 sensor measuring optical heart rate, electrical heart signal (ECG), and Bioelectrical Impedance Analysis (BIA).
• Body Composition: Measures body fat percentage, skeletal muscle, body water, and basal metabolic rate directly from the wrist in seconds.
• Sleep & Fitness: Advanced sleep coaching, continuous blood oxygen monitoring, and automatic tracking for over 90 workouts.

5. Battery and Power Management

• Battery Life: Up to 40 hours of typical everyday usage (247 mAh on 40mm; 361 mAh on 44mm).
• Charging: WPC-based wireless magnetic fast charging.

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Technical Specifications

Building upon the foundational overview, this technical deep-dive specification sheet provides a granular look at the hardware architecture, display calibrations, sensor arrays, audio profiles, and environmental ratings of the Samsung Galaxy Watch 4.

1. Detailed Dimensions and Build Quality

• 40mm Case: 40.4 x 39.3 x 9.8 mm; Weight: ~25.9g
• 44mm Case: 44.4 x 43.3 x 9.8 mm; Weight: ~30.3g
• Chassis & Materials: Armor Aluminum frame with fluoroelastomer sport bands.
• Durability: 5ATM + IP68 / MIL-STD-810G certified.

2. Advanced Display Specifications

• Panel Type: Super AMOLED full-color round touch display.
• Resolutions: 396 x 396 (40mm) / 450 x 450 pixels (44mm).

3. Processor and Memory Architecture

• System on Chip (SoC): Exynos W920 Dual-Core 5nm processor.
• Memory & Storage: 1.5 GB RAM with 16 GB internal flash storage.

4. Comprehensive Sensor Suite

• Health Sensors: Samsung BioActive Sensor (Optical Heart Rate, Electrical Heart, Bioelectrical Impedance Analysis), SpO2 sensor.
• Motion & Environment: Accelerometer, gyroscope, barometer, ambient light sensor, compass.

5. Battery and Power Management

• Battery Capacity: 247 mAh (40mm) / 361 mAh (44mm).
• Charging: Wireless magnetic fast charging dock.

6. Connectivity and Networking

• Wireless: Wi-Fi 802.11 a/b/g/n, Bluetooth 5.0, NFC, GPS/GLONASS/Galileo/Beidou.
• Cellular Options: Optional LTE carrier models available.