Samsung Galaxy Watch4 Aluminum 40mm LTE Smartwatch (Black)

Overview

The Samsung SM-R865UZKAXAA is a Galaxy Watch4 Aluminum 40mm LTE smartwatch designed to keep you connected and informed without needing your phone nearby. Powered by a 1.18 GHz Exynos W920 processor and equipped with 16 GB of internal storage, it delivers smooth performance for apps, music, and watch faces. The 396 × 396 AMOLED display offers sharp visuals protected by Gorilla Glass DX+, while health sensors track heart rate, blood oxygen, body composition, and sleep patterns. With LTE, Bluetooth 5.0, Wi-Fi, GPS, and NFC, this watch supports calls, messages, navigation, and contactless payments on the go.

Key features

• LTE connectivity allows phone-free calls, messages, and streaming for true independence from your smartphone
• Comprehensive health monitoring with heart rate, ECG, SpO2, body composition, and automatic sleep tracking to keep tabs on your wellness
• Durable design meeting IP68 and MIL-STD-810G standards for resistance to dust, shock, and water up to 164 feet, suitable for active lifestyles
• Wear OS by Samsung provides seamless integration with Android devices and access to Google Play apps and watch faces
• Wireless charging support with a 247 mAh battery that powers the watch through a full day of use
• Lightweight aluminum case paired with a comfortable fluoroelastomer band that stays secure during workouts or daily wear

Key specs

• Processor: Exynos W920 dual-core 1.18 GHz
• Storage: 16 GB internal
• Display: 1.2-inch AMOLED, 396 × 396 pixels
• Screen protection: Corning Gorilla Glass DX+
• Connectivity: LTE, Bluetooth 5.0, Wi-Fi, GPS, NFC
• Battery: 247 mAh with wireless charging
• Water resistance: IP68, MIL-STD-810G certified (up to 164 feet)
• Case size: 40 mm aluminum

Connectivity and compatibility

This smartwatch supports LTE for independent cellular use, allowing you to make calls and send messages without your phone. Bluetooth 5.0 ensures stable connections to wireless headphones and other accessories, while Wi-Fi and GPS provide reliable internet access and location tracking. NFC enables contactless payments, making it easy to tap and pay on the go. Wear OS by Samsung ensures smooth compatibility with Android smartphones and access to a wide range of apps and watch faces through Google Play.

Ideal uses and environments

The Galaxy Watch4 fits well into active and connected lifestyles. It is a strong choice for runners and fitness enthusiasts who want phone-free GPS tracking and detailed health metrics. Commuters benefit from LTE connectivity and tap-to-pay convenience, while anyone interested in monitoring their wellness will appreciate the comprehensive sensor suite. Its durable build and water resistance make it suitable for outdoor activities and everyday wear, whether at the gym, office, or on the trail.