Apple Watch Series 4 Stainless Steel

Apple Watch Series 4 Stainless Steel
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Specifications
Certified Quality & Packaging
Apple Watch Series 4 Stainless Steel
Quick Facts
Item | Details |
|---|---|
Launch Year | 2018 |
Case Material | Stainless Steel |
Available Sizes | 40mm, 44mm |
Display | LTPO OLED Retina Display (324 × 394 / 368 × 448) |
Processor | Apple S4 SiP |
Connectivity | GPS + Cellular |
Battery Life | Up to 18 hours |
Water Resistance | 50m (WR50) |
Health Features | Heart Rate, ECG, Fall Detection |
Glass | Sapphire Crystal |
Storage | 16GB |
Weight | 40.6g (40mm), 47.8g (44mm) |
Compatibility | iPhone only |
Overview
The Apple Watch Series 4 Stainless Steel is designed for iPhone users who want a more premium Apple Watch with a polished stainless steel finish and enhanced durability. Compared to the Aluminium model, it features Sapphire Crystal glass, which offers better scratch resistance for everyday wear.
Powered by the Apple S4 SiP, it includes a bright Retina display, ECG, Fall Detection, built-in GPS + Cellular connectivity, up to 18 hours of battery life and 50m water resistance. When buying a used Apple Watch, check the battery condition, Activation Lock status, Sapphire Crystal glass, and overall condition before making your purchase.
Key Highlights
1. Premium Stainless Steel Design
The polished stainless steel case gives the watch a more premium appearance and improved durability compared to the Aluminium model.
Why it matters
Premium polished finish
Better resistance to dents
Ideal for both casual and formal wear
2. Sapphire Crystal Display
Unlike the Aluminium version, the Stainless Steel model uses Sapphire Crystal glass, which is significantly more resistant to scratches.
Why it matters
Better scratch resistance
Suitable for daily wear
Helps maintain resale value
3. Built-in GPS + Cellular
The Stainless Steel version comes with GPS + Cellular as standard, allowing you to stay connected without your iPhone nearby.
Why it matters
Make calls without your iPhone
Send messages on the go
Stream music with a supported mobile plan
Key Features Explained
Feature | Specification | Why It Matters |
|---|---|---|
Display | LTPO OLED Retina Display | Bright and easy to read indoors and outdoors |
Processor | Apple S4 SiP | Smooth everyday performance |
Battery Life | Up to 18 hours | Suitable for a full day’s typical use |
Charging | Magnetic Charging Cable | Simple and convenient charging |
Water Resistance | 50m (WR50) | Suitable for swimming but not diving |
Connectivity | GPS + Cellular | Stay connected even without your iPhone nearby |
Health Features | Heart Rate, ECG, Fall Detection | Supports health monitoring and safety features |
Glass | Sapphire Crystal | More scratch resistant than Ion-X glass |
Case Material | Stainless Steel | Premium finish with added durability |
Compatibility | iPhone only | Apple Watch is not compatible with Android phones |
GPS + Cellular
Unlike the Aluminium version, the Apple Watch Series 4 Stainless Steel is available with GPS + Cellular as standard.
With a supported carrier and mobile plan, you can:
Make and receive phone calls
Send and receive messages
Stream Apple Music
Receive notifications
Stay connected even when your iPhone is not nearby
If you normally leave your phone behind during workouts or commuting, GPS + Cellular offers greater flexibility.
Compare the Related Models
Feature | Apple Watch Series 3 Stainless Steel | Apple Watch Series 4 Stainless Steel | Apple Watch Series 5 Stainless Steel | Apple Watch Series 6 Stainless Steel |
|---|---|---|---|---|
Launch Year | 2017 | 2018 | 2019 | 2020 |
Display | OLED Retina | LTPO OLED Retina | Always-On LTPO OLED Retina | Always-On LTPO OLED Retina |
Processor | Apple S3 | Apple S4 | Apple S5 | Apple S6 |
Health Features | Heart Rate | Heart Rate, ECG, Fall Detection | Heart Rate, ECG, Fall Detection | ECG, Blood Oxygen, Fall Detection |
Battery Life | Up to 18 hours | Up to 18 hours | Up to 18 hours | Up to 18 hours |
Storage | 16GB | 16GB | 32GB | 32GB |
Water Resistance | 50m | 50m | 50m | 50m |
Connectivity | GPS + Cellular | GPS + Cellular | GPS + Cellular | GPS + Cellular |
Glass | Sapphire Crystal | Sapphire Crystal | Sapphire Crystal | Sapphire Crystal |
Weight | 42.4g / 52.8g | 40.6g / 47.8g | 40.6g / 47.8g | 39.7g / 47.1g |
Which Apple Watch Should You Choose?
Model | Recommended For |
|---|---|
Apple Watch Series 4 Stainless Steel | Buyers who want Sapphire Crystal glass and premium build quality at an affordable price. |
Apple Watch Series 5 Stainless Steel | Buyers who want an Always-On Display. |
Apple Watch Series 6 Stainless Steel | Buyers who want Blood Oxygen monitoring and a faster processor. |
Apple Watch Series 3 Stainless Steel | Buyers looking for a lower-cost premium Apple Watch. |
Alternatives to Apple Watch Series 4 Stainless Steel
If you’re comparing before buying, you may also want to check these related SellUp Marketplace pages:
Common Questions
Is the Apple Watch Series 4 Stainless Steel still worth buying?
Yes. It remains a great choice for buyers who prefer a premium Apple Watch with Sapphire Crystal glass, ECG, Fall Detection and GPS + Cellular connectivity. When buying used, check the battery condition, Activation Lock status and overall condition.
What is the difference between the Stainless Steel and Aluminium models?
The Stainless Steel model includes Sapphire Crystal glass, GPS + Cellular as standard and a heavier premium case. The Aluminium model uses Ion-X glass, is lighter and is available in both GPS and GPS + Cellular versions.
Is the Apple Watch Series 4 Stainless Steel waterproof?
The Apple Watch Series 4 Stainless Steel has a 50m (WR50) water resistance rating, making it suitable for swimming. It is not designed for diving or high-pressure water sports. Water resistance may reduce over time on used devices.
Is the Apple Watch Series 4 Stainless Steel better than the Apple Watch Series 5 Stainless Steel?
The Series 5 adds an Always-On Display, built-in compass and 32GB of storage. If you want the best value in a premium Apple Watch, the Series 4 Stainless Steel remains an excellent choice. If an Always-On Display is important, the Series 5 is worth the upgrade.
Why Buy the Apple Watch Series 4 Stainless Steel?
The Apple Watch Series 4 Stainless Steel combines a premium stainless steel case, Sapphire Crystal glass, ECG, Fall Detection and GPS + Cellular connectivity, making it an excellent choice for buyers seeking a high-end Apple Watch at a more affordable used price. Compare Apple Watch Series 4 Stainless Steel listings on SellUp Marketplace to find the case size, condition and price that best suit your budget.









