Apple doesn’t always make the big leap forward feel affordable, but with the Apple Watch SE 3, they came close.

At the same $249 starting price as the SE 3 arrives with the S10 chip (the same powering the $799 Ultra 3), a first-ever Always-On display for the SE line, 5G cellular, fast charging, wrist temperature sensing, sleep apnea notifications, and a dramatically tougher Ion-X cover glass. That’s a meaningful upgrade from a two-year-old model that was starting to feel its age.

The compromises are real and honest: no ECG, no blood oxygen sensor, no hypertension notifications, no sapphire glass, and only 18-hour battery life. But for iPhone users who want a capable everyday fitness and health companion and don’t need the advanced clinical features of the Series 11 or the extreme durability of the Ultra 3, the SE 3 at $249 may be the most sensible Apple Watch ever made.

Here’s the complete Apple Watch SE 3 Review:

Quick Verdict

Overall Rating: 4.2 / 5

Best For	iPhone users who want a capable everyday health and fitness watch at an accessible price
Skip If	You need ECG, blood oxygen, or more than 18 hours of battery life
Price	From $249 (GPS) / from $299 (GPS + Cellular)
Standout Feature	S10 chip + Always-On display + fast charging at $249 — the biggest SE upgrade in years

Specs Overview

Spec	40mm	44mm
Display	Always-On Retina LTPO	Always-On Retina LTPO
Chip	Apple S10	Apple S10
Case Material	100% recycled aluminum	100% recycled aluminum
Glass	Ion-X (4x crack resistant)	Ion-X (4x crack resistant)
Battery	Up to 18 hours	Up to 18 hours
GPS	Built-in	Built-in
Cellular	Optional (5G)	Optional (5G)
Health Sensors	Optical HR, wrist temp, accelerometer, gyroscope
Safety	Fall Detection, Crash Detection, Emergency SOS
Water Resistance	WR50 (50 meters)
Gestures	Double Tap, Wrist Flick
Colors	Midnight, Starlight
GPS Price	$249	$279
Cellular Price	$299	$329
Released	September 19, 2025

Price

The Apple Watch SE 3 starts at $249 for the 40mm GPS model, unchanged from the SE 2, which makes the upgrade meaningful without any price sting. The 44mm GPS model is $279, and cellular models start at $299 (40mm) and $329 (44mm).

Here’s how it sits against the full Apple Watch lineup and its closest external competition:

Watch	Price	Always-On	ECG	SpO2	GPS Battery
Apple Watch SE 3	From $249	✅	❌	❌	~18 hrs total
Apple Watch Series 11	From $399	✅	✅	✅	~18 hrs total
Apple Watch Ultra 3	$799	✅	✅	✅	~20 hrs GPS
Garmin Forerunner 165	$249	✅	❌	❌	19 hrs GPS
Coros Pace 4	$249	✅	❌	✅	41 hrs GPS

Within the Apple ecosystem, the decision is straightforward: the SE 3 is the right choice for most iPhone users who don’t have a specific clinical need for ECG or blood oxygen monitoring. For $150 more, the Series 11 adds those sensors along with a more modern edge-to-edge display and faster charging.

Against external competition, the SE 3 is positioned as a smartwatch first; its GPS-only battery endurance (~18 hours total use, not pure GPS tracking) is much shorter than sport-focused rivals like the Coros Pace 4 or Garmin Forerunner 165 at the same price. If dedicated running analytics and a multi-day battery are the priority, those watches are the better tools.

Design

The Apple Watch SE 3 carries the same exterior design as the SE 2 and, honestly, as the Series 5 from 2019. The rounded rectangular aluminum case, the flat display, the Digital Crown, and side button placement are all unchanged. If you’re upgrading from an older SE model expecting a fresh look, you won’t find one here.

That said, the design is Apple Watch, and Apple Watch is comfortable, well-proportioned, and recognizable on any wrist. At 40mm and 44mm, both sizes suit a wider range of wrists than the 49mm Ultra 3. The recycled aluminum case keeps it lightweight for all-day and sleepwear.

The most meaningful exterior upgrade is the Ion-X glass, now 4x more crack-resistant than the previous generation. For an everyday watch that’s going to take the inevitable countertop knock or gym equipment bump, this is a real-world improvement. It’s still Ion-X rather than sapphire (used on the Series 11 and Ultra 3), so it will show scratches over time, but it’s significantly more durable than before.

Four corner buttons on the watch face give quick access to media, Workout Views, and features like Pacer and Custom Workouts, and an interface refresh that makes navigating fitness features faster mid-run.

The updated Double Tap and new Wrist Flick gestures allow hands-free control, tap thumb and forefinger together to answer calls or stop timers, flick the wrist to dismiss notifications. Useful during runs when you don’t want to reach across and touch the screen.

Available in Midnight and Starlight subdued, understated colorways that work in any setting.

Display

The biggest functional upgrade from the SE 2 is the Always-On display, a feature finally arriving on the SE line after debuting on the Series 5 back in 2019.

It sounds simple, but it changes how the watch feels in daily use. You can glance at the time, check complications, or see a notification preview without a wrist raise or screen tap. For runners checking pace mid-stride, it means one less gesture between you and your data.

The display itself is an Always-On Retina LTPO panel, bright, clean, and of the same quality you’d expect from Apple. It’s smaller than the Series 11’s edge-to-edge display and doesn’t quite reach the peak brightness of the Ultra 3’s 3,000-nit panel, but for everyday use and outdoor runs, it’s more than adequate.

One small limitation: the always-on mode on the SE 3 doesn’t support the ticking-seconds animations available on the Series 11 and Ultra 3, a minor detail that won’t affect most users but is worth noting for watch face enthusiasts.

Training Features

Running & Fitness Tracking

Accurate outdoor route tracking for running, walking, cycling, hiking, with built-in GPS

Build structured interval sessions with multiple segments, targets, and rest periods with custom workouts.

Apple Intelligence-powered spoken motivation and pacing guidance during runs requires an iPhone nearby with Apple Intelligence enabled and Bluetooth headphones

Set a target pace with pacer for any distance, and get real-time feedback on how you’re tracking

Advanced running metrics such as Cadence, stride length, ground contact time, and vertical oscillation

Auto-workout detection automatically detects when you’ve started a run, walk, swim, or cycling session

Activity rings: Move, Exercise, Stand, goal tracking, the core Apple Watch fitness system

Apple Music integration automatically selects playlists based on your workout and preferences — or choose your own

Health Features

Wrist temperature sensing enables retrospective ovulation estimates for cycle tracking and richer Vitals app data, a significant upgrade from the SE 2

Sleep score tracks sleep quality based on duration, consistency, and interruptions

Sleep apnea notifications monitor breathing disruptions during sleep and alert if consistent signs are detected

Heart rate monitoring: Continuous optical HR tracking, high/low heart rate notifications, irregular rhythm alerts

Fall Detection detects hard falls and automatically contacts emergency services if you’re unresponsive

Crash Detection detects severe car crashes and contacts emergency services

Emergency SOS calls emergency services and shares your location

What’s missing vs Series 11:

• No ECG (atrial fibrillation detection)
• No blood oxygen (SpO2) sensor
• No hypertension notifications
• No always-on ticking-seconds animations

Smart Features

5G cellular (cellular models) make calls, stream music, send messages without an iPhone nearby

Siri on-device access, Siri with health data context, faster and more private than previous SE models

Messages, Phone, Maps, Calendar, Apple Pay

AirPods integration, pair with AirPods Pro 3 for combined heart rate data. Reviewers note this delivers accuracy on par with a chest strap, providing a compelling upgrade path for SE 3 owners

WatchOS 26 Smart Stack, Apple Intelligence integration, Liquid Glass design language

Performance

GPS Accuracy

The SE 3 uses built-in GPS for outdoor workout tracking. It does not have dual-frequency GPS like the Ultra 3, but only a single-band GPS. In normal running conditions on roads and open paths, GPS accuracy is reliable and consistent with Apple Watch quality. In urban canyons with tall buildings or dense tree cover, single-band GPS can occasionally show position drift, a limitation it shares with the Garmin Forerunner 165 at the same price.

Heart Rate Accuracy

The optical HR sensor in the SE 3 delivers solid accuracy for steady-state running and general fitness tracking. For high-intensity intervals and sprint work, optical HR can briefly lag as with all wrist-based sensors. For serious heart rate training, pairing with AirPods Pro 3 for biometric data or an external HR strap is a viable option.

Battery Life

Battery life is the SE 3’s most discussed limitation. Apple rates it at 18 hours of normal use, and real-world experience confirms this means daily charging for most users.

With the Always-On display active, GPS tracking for a 30–60 minute run, and regular notification use throughout the day, most reviewers end the day with 15–25% battery remaining. That’s enough to start sleep tracking, but tight enough that a morning top-up is often necessary.

For reference, the Coros Pace 4 at the same $249 price delivers 41 hours of GPS battery. The Apple Watch SE 3 is not a sport endurance tool; it’s a daily-charge smartwatch that also does fitness tracking very well.

Fast charging is a genuine improvement. 15 minutes of charging adds approximately 8 hours of use. Dropping it on the charger while showering gives enough battery to get through most of the day or night comfortably.

Who Should Buy It?

Buy the Apple Watch SE 3 if:

• You’re an iPhone user who wants a capable health and fitness watch at an accessible price
• You’re upgrading from an older Apple Watch (SE 2, Series 4, 5, 6) and want meaningful improvements
• You’re entering the Apple Watch ecosystem for the first time and want the best-value starting point
• Every day, fitness tracking, running, walking, cycling, and swimming, the gym covers your needs
• You want Always-On display and fast charging without paying for the Series 11
• You’re a casual to intermediate runner who doesn’t need deep training analytics or a multi-day battery
• Apple ecosystem integration, AirPods, iPhone, Health app, and Strava are central to your setup

Skip it if:

• You need ECG or blood oxygen monitoring, step up to the Series 11 at $399
• Battery life beyond 18 hours matters. The Coros Pace 4 or Garmin Forerunner 165 at the same price deliver far more GPS endurance
• You’re on Android, the SE 3 requires an iPhone
• You’re a serious runner or triathlete who wants deep training load analytics, offline maps, or multi-day GPS purpose-built sport watches from Garmin, Coros, or Polar are better suited
• You want a distinct new look the SE 3 design is essentially unchanged from 2022

Final Verdict

The Apple Watch SE 3 is the best value Apple Watch ever made and one of the most practical smartwatches at $249 for iPhone users.

The S10 chip, Always-On display, fast charging, wrist temperature sensing, sleep apnea notifications, and the dramatically tougher Ion-X glass all arrive at the same price as its predecessor. That’s a generational leap, not just a spec refresh.

For casual to intermediate runners who want a daily companion that handles workouts, health monitoring, safety features, and everyday smartwatch use beautifully, and who charge their watch every night without a second thought, the SE 3 delivers everything they need.

The gaps are real: no ECG, no SpO2, no multi-day battery. If those matter, the Series 11 or a dedicated GPS sport watch is the right call. But for the wide majority of iPhone users who just want a capable, reliable, everyday Apple Watch, this is the one.

Scores:

Category	Score
Design	3.8 / 5
Display	4.3 / 5
Training Features	4.0 / 5
Performance	4.1 / 5
Value	4.7 / 5
Overall	4.2 / 5

Frequently Asked Questions

This review is based on aggregated expert testing data, official specifications, and real user feedback compiled from across the running and smartwatch community. We bring together the most accurate and up-to-date information so you can make a confident buying decision.