The Apple Watch SE 3 is a mid-range smartwatch designed for users who want core health and fitness tracking, smart notifications, and everyday convenience at an affordable price. This specifications page provides a complete, easy-to-read overview of the device, including its display, performance, health features, battery life, connectivity, and more — helping buyers make an informed decision.
Apple Watch SE 3 – Specifications
General Information
| Feature | Specification |
|---|---|
| Brand | Apple |
| Model | Watch SE 3 |
| Launch Date | September 2024 |
| Status | Available |
| Price Range | Mid-range smartwatch |
Design & Build
| Feature | Specification |
|---|---|
| Dimensions | 40mm / 44mm |
| Weight | ~30.68g / ~36.20g (varies by size) |
| Build Material | Aluminum case |
| Strap Material | Sport Band / Multiple options |
| Colors Available | Midnight, Starlight, Silver, (others may vary) |
| Water Resistance | Swimproof (50m / WR50) |
Display
| Feature | Specification |
|---|---|
| Screen Size | 1.57 in (40mm) / 1.78 in (44mm) |
| Display Type | Retina LTPO OLED |
| Resolution | ~396 × 484 (44mm) / ~352 × 430 (40mm) |
| Pixel Density | ~326 ppi |
| Always-On Display | Yes (SE 3 may support an adaptive display) |
| Protection | Ion-X strengthened glass |
Performance
| Feature | Specification |
|---|---|
| Processor | S9 SiP (expected) / S8 (based on previous SE) |
| RAM | ~1GB (typical Apple Watch SE) |
| Internal Storage | 32GB |
| Performance Usage | Smooth for daily apps, fitness & notifications |
Software & Compatibility
| Feature | Specification |
|---|---|
| Operating System | watchOS 11 (expected) |
| App Support | Yes |
| Compatible Devices | iPhone (iOS 17 or later) |
| Voice Assistant | Siri |
Health & Fitness Features
| Feature | Specification |
|---|---|
| Heart Rate Monitor | Yes |
| SpO₂ (Blood Oxygen) | No (feature reserved for higher models) |
| ECG | No |
| Sleep Tracking | Yes |
| Fall Detection | Yes |
| Emergency SOS | Yes |
| Workout Tracking | Yes (multi-sport) |
| Steps / Calories | Yes |
Sensors
| Feature | Specification |
|---|---|
| Accelerometer | Yes |
| Gyroscope | Yes |
| Heart Rate Sensor | Yes |
| Ambient Light Sensor | Yes |
| Compass | Yes |
| Barometer | Yes |
Battery & Charging
| Feature | Specification |
|---|---|
| Battery Capacity | ~290–300mAh (estimated) |
| Battery Life | Up to 18 hours (typical) |
| Charging Type | Magnetic charging cable |
| Fast Charging | Yes (improved speeds vs older SE) |
Connectivity
| Feature | Specification |
|---|---|
| Bluetooth | Bluetooth 5.x |
| Wi-Fi | 802.11b/g/n 2.4GHz / 5GHz |
| GPS | Yes (GPS + GLONASS) |
| NFC | Yes (Apple Pay) |
| Cellular | Optional (LTE model) |
| USB Port | Magnetic charging (no USB-C port on watch itself) |
Audio & Alerts
| Feature | Specification |
|---|---|
| Speakers | Yes (built-in) |
| Microphone | Yes |
| Vibration | Yes |
| Notification Support | Calls, Messages, Apps |
Safety & Security
| Feature | Specification |
|---|---|
| Emergency SOS | Yes |
| Fall Detection | Yes |
| Crash Detection | Yes (depending on region / software) |
| Child / Family Setup | Yes |
Key Features (Highlight Section)
- Affordable Apple Watch with core features
- Smooth performance and fitness tracking
- Swimproof design with fall and emergency detection
- Compatible with iPhone ecosystem and Apple services
- Improved battery and adaptive display support
Comparison – Related Smartwatches
Apple Watch SE 3 vs Alternatives
- Apple Watch Series 9
- Samsung Galaxy Watch 6
- Fitbit Versa 4
Pros and Cons
Pros
- Strong Apple ecosystem support
- Reliable fitness tracking and safety features
- Lightweight and comfortable design
- More affordable than flagship Apple Watches
Cons
- No ECG or SpO₂ sensors
- Battery life still around 18 hours
- Fewer advanced sensors than premium models
Price & Value
The Apple Watch SE 3 offers excellent value in the mid-range smartwatch category, especially for iPhone users who want reliable performance, fitness features, and Apple integration without paying flagship prices.
Who Should Buy This Smartwatch?
Best for:
- iPhone users on a budget
- Fitness and everyday tracking users
- Users who want Apple ecosystem features
Not ideal for:
- Users needing advanced health sensors (ECG / SpO₂)
- Users who want maximum battery life
Final Verdict
The Apple Watch SE 3 is a well-balanced smartwatch that covers most needs of everyday users. With its responsive interface, essential health features, and integration with Apple services, it’s one of the best value smartwatches for iPhone owners.
FAQs
1. Is the Apple Watch SE 3 compatible with Android?
No — it works only with iPhone.
2. Does it have ECG or blood oxygen monitoring?
No, those features are reserved for higher Apple Watch models.
3. How long does the battery last?
Up to about 18 hours with typical use.
4. Is the Apple Watch SE 3 waterproof?
Yes — it is water-resistant and suitable for swimming.
5. Does it support Apple Pay?
Yes — via NFC.
Disclaimer
Disclaimer: The specifications listed above are based on official announcements, reliable sources, and expected features. Actual features and availability may vary by region and software updates.
