
Samsung Galaxy Watch 4 40mm ECG LTE Renewed
Advanced Health and Fitness Tracking on Your WristIntroducing the Samsung Galaxy Watch 4, a smartwatch designed to help you achieve your health and fitness goals. Featuring advanced sensors, including an ECG monitor, sleep cycle tracking, and GPS, this renewed device provides comprehensive insigh...
*Price sourced from Amazon.com. Last updated:Jun 27, 2026.Price and availability are subject to change.
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Overview
Advanced Health and Fitness Tracking on Your Wrist
Introducing the Samsung Galaxy Watch 4, a smartwatch designed to help you achieve your health and fitness goals. Featuring advanced sensors, including an ECG monitor, sleep cycle tracking, and GPS, this renewed device provides comprehensive insights into your well-being.
Specifications:
- Brand: Samsung
- Model: Samsung Galaxy Watch 4
- Screen: 1.2" (30.2mm) Super AMOLED, 396 x 396 pixels
- Operating System: Android Wear OS, One UI Watch 3
- Memory: 16GB Storage, 1.5GB RAM
- Connectivity: Bluetooth, Wi-Fi, LTE
- Sensors: Accelerometer, Barometer, Gyro Sensor, Geomagnetic Sensor, Light Sensor, Optical Heart Rate Sensor, Electrical heart sensor, Bioelectrical Impedance Analysis Sensor
- Durability: Glass front (Gorilla Glass DX+), MIL-STD-810G compliant, 50m water-resistant (IP68)
- GPS: Built-in GPS
- Battery Capacity: 247mAh
- Color: Black
Key Features
1.2 "(30.2mm) Super AMOLED, 396 x 396 pixels (~330 ppi density), 16M Colors, CPU: Dual-Core 1.15GHz, 247mAh Battery, Android Wear OS, One UI Watch 3, Bluetooth, Wi-Fi
The Galaxy Watch4 uses red LEDs and infrared rays to calculate your SpO2 levels or the amount of oxygen in your blood.
Glass front (Gorilla Glass DX+), MIL-STD-810G compliant, 50m water-resistant (IP68), Compatible with standard 20mm straps, ECG certified, Blood pressure monitor
Sensors: Accelerometer, Barometer, Gyro Sensor, Geomagnetic Sensor, Light Sensor, Optical Heart Rate Sensor, Electrical heart sensor, Bioelectrical Impedance Analysis Sensor
Cellular LTE model Compatible with Cellular Network, Contact Carrier to Register on your account. Compatible with Android devices. Supports Samsung Pay. 4G LTE Bands: B2 (1900 MHz), B4 (1700 MHz), B5 (850 MHz), B12 (700 MHz), B13 (700 MHz), B25 (1900 MHz), B26 (850 MHz), B66 (1700 MHz), B71 (600 MHz) - Please check if compatible with your carrier.
Specifications
Pros & Cons
👍 Pros
- Features a vibrant 1.2-inch (30.2mm) Super AMOLED display with a high resolution of 396 x 396 pixels for clear visuals
- Includes advanced health sensors such as ECG, Blood Pressure Monitor, Optical Heart Rate Sensor, and Bioelectrical Impedance Analysis Sensor
- Utilizes red LEDs and infrared rays to calculate SpO2 levels, providing insights into blood oxygen saturation
- Equipped with cellular LTE connectivity, allowing it to function independently of a phone for calls and data
- Boasts MIL-STD-810G compliance and 50m water-resistance (IP68), indicating robust durability against environmental factors
👎 Cons
- As a renewed product, the exact condition and remaining warranty might vary, which is a consideration for some buyers
- The battery capacity of 247mAh might require daily charging, depending on usage, especially with LTE active
- Requires an Android device for full compatibility and setup, limiting its use with iOS ecosystems
- While it has a blood pressure monitor, the feature often requires calibration with a traditional cuff and may not be approved in all regions
- LTE functionality depends on carrier compatibility and registration, which adds an extra step and potential cost for the user