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Round black smartwatch with rotating bezel, 42mm case, dark strap

SAMSUNG

SAMSUNG Galaxy Watch 4 Classic 42mm wearable technology

SKU CH-AT49-518VY

A 42 mm smartwatch with body-composition analysis, ECG monitoring, advanced sleep tracking, automatic workout detection, GPS, LTE and Google services on the wrist

  • Body composition analysis on your wrist with body fat, muscle, water and BMI readings
  • Advanced sleep tracking monitors SpO2 levels continuously for better rest
  • ECG monitoring detects atrial fibrillation and shares data with your doctor
  • Automatic recognition of 6 activities including running, rowing and swimming
  • Google services and apps on your wrist for payments, directions and voice assistance

Product Identity

The Samsung Galaxy Watch 4 Classic 42mm is a new smartwatch built for people who want detailed health insights on their wrist. It combines body composition analysis, ECG monitoring, and advanced sleep tracking with LTE connectivity for standalone use.

Upgrade Path

This device replaces basic fitness bands or earlier smartwatches that lack clinical-grade sensors for heart rhythm and body fat measurement. The jump is worth it when you need medical-grade ECG data, automatic workout detection across six activities, and the ability to leave your phone behind during runs.

Build Integration

The watch works as an extension of a compatible Galaxy phone for calls, texts, and music streaming while also supporting Google services like Maps and Assistant directly on the wrist. It frees you from carrying a handset for contactless payments, navigation, and emergency fall detection with LTE active.

Highlights

  • Body composition analysis on your wrist with body fat, muscle, water and BMI readings
  • Advanced sleep tracking monitors SpO2 levels continuously for better rest
  • ECG monitoring detects atrial fibrillation and shares data with your doctor
  • Automatic recognition of 6 activities including running, rowing and swimming
  • Google services and apps on your wrist for payments, directions and voice assistance

Specifications

No published specifications for this item yet.

Questions about this item

What wrist sizes does the 42 mm case fit with the included band?

The 42 mm case fits a range of wrist sizes using the supplied sport band and adjustable clasp.

How is the watch set up for ECG and fall detection, and what step is often missed?

Pair the watch with a compatible Galaxy phone, then enable ECG and fall detection inside the Samsung Health Monitor app; the step often missed is granting the required health-data permissions on the phone.

Which sensor components will need attention over time for accurate body-composition and SpO2 readings?

Keep the rear optical heart-rate and bioelectrical-impedance sensors clean and free of oils; wipe them regularly with a soft, dry cloth to maintain measurement accuracy.

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