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Overview

The Samsung Galaxy Watch 4 Classic (released in 2021) combined the modern capabilities of Wear OS Powered by Samsung with the much-loved physical rotating bezel and a premium, high-grade stainless steel timepiece aesthetic.

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

1. Design and Build

• Form Factor: Traditional luxury watch design featuring a tactile physical rotating bezel for precise navigation through apps and notifications.
• Dimensions & Weight: Available in 42mm (~46.5g) and larger 46mm (~52g) stainless steel configurations.
• Materials: Premium stainless steel metal housing protected by scratch-resistant Corning Gorilla Glass DX.
• Ingress Protection: 5ATM water resistance up to 50 meters, IP68 dust/water protection, and MIL-STD-810G military durability compliance.

2. Display Technology

• Main Display: Circular Super AMOLED display with vibrant contrast and Always-On Watch capability.
• Resolutions: 396 x 396 pixels (42mm) and 450 x 450 pixels (46mm).

3. Performance & Software

• Processor: Powered by the Exynos W920 5nm dual-core processor for snappy app transitions.
• Storage & Memory: Packed with 1.5 GB of RAM and 16 GB of internal storage for music and apps.
• Operating System: Wear OS Powered by Samsung with access to Google Play Store applications.

4. Health, Fitness, and Body Sensors

• BioActive Sensor: Advanced 3-in-1 sensor supporting optical heart rate monitoring, 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.
• Sleep & Fitness: Comprehensive sleep analysis with snore detection, blood oxygen (SpO2) tracking, and over 90 guided workout modes.

5. Battery and Power Management

• Battery Life: Up to 40 hours of typical everyday usage (247 mAh on 42mm; 361 mAh on 46mm).
• 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 Classic.

1. Detailed Dimensions and Build Quality

• 42mm Case: 41.5 x 41.5 x 11.2 mm; Weight: ~46.5g
• 46mm Case: 45.5 x 45.5 x 11.0 mm; Weight: ~52.0g
• Chassis & Materials: Stainless steel case with ridge bezel and fluoroelastomer sport strap.
• Durability: 5ATM + IP68 / MIL-STD-810G certified.

2. Advanced Display Specifications

• Panel Type: Super AMOLED full-color round touch display.
• Resolutions: 396 x 396 (42mm) / 450 x 450 pixels (46mm).

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 (42mm) / 361 mAh (46mm).
• Charging: Wireless magnetic fast charging puck.

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 versions available.