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Apple Watch SE 3 Aluminum 40mm

5G Device
Color: Starlight Case with Starlight Sport Band (Size S/M)
Availability
In Stock
On activation
Smart watch fee, $10/mo
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Estimated monthly cost

$8.33
Apple Watch SE 3 Aluminum 40mm
Apple
Starlight Case with Starlight Sport Band (Size S/M)
Apple Watch SE 3 is packed with health, fitness, connectivity, and safety essentials - all for a great value. Track your sleep score. Get richer health insights in the Vitals app.¹ Stay active with a wide range of workouts. Save time with fast charging.² See your info at a glance with the Always-On display. And still get all-day, 18-hour battery life.³
USD
8.33

Key features

Apple Watch SE 3 is packed with health, fitness, connectivity, and safety essentials - all for a great value. Track your sleep score. Get richer health insights in the Vitals app.¹ Stay active with a wide range of workouts. Save time with fast charging.² See your info at a glance with the Always-On display. And still get all-day, 18-hour battery life.³

  • Controls

    Digital Crown with haptic feedback; Side button; Double tap and wrist flick gestures; Siri with on‑device processing

  • Chip

    S10 chip with 64‑bit dual-core processor; 4‑core Neural Engine; 64GB capacity

  • Sensors

    Second-generation optical heart sensor; Temperature sensor;⁴ Compass; Always‑on altimeter; High‑g accelerometer; High dynamic range gyroscope; Ambient light sensor;

  • Health and Wellness

    Cycle Tracking app with retrospective ovulation estimates;⁵ Heart Rate app; High and low heart rate notifications; Irregular rhythm notifications;⁶ Medications app; Mindfulness app; Noise app; Sleep app including sleep stages Sleep score; Sleep apnea notifications⁷

  • Display

    Always-On Retina display with OLED and LTPO; Tough Ion-X front glass with 4x crack resistance;⁸ Up to 1000 nits peak brightness; 2 nits minimum brightness; 326 pixels per inch

  • Power and Battery Life

    All‑day battery life, up to 18 hours of normal use⁹; Up to 32 hours in Low Power Mode;⁹ Built‑in rechargeable lithium‑ion battery; Fast‑charge capable;¹⁰ Up to 80% charge in about 45 minutes;¹⁰ 15 minutes for up to 8 hours of normal use;¹¹ 8 minutes for up to 8 hours of sleep tracking¹¹

  • Operating System

    watchOS is the world’s most advanced wearable operating system, with apps and features designed to keep you active, healthy, safe, and connected.

  • Running

    Custom workouts; Customizable Workout Views; Training Load; Heart Rate Zones; Race Route; Pacer; Stride Length, Ground Contact Time, and Vertical Oscillation; Automatic track detection; Multisport workout

  • Hiking

    Compass with bearing, incline, elevation, and coordinates; Custom waypoints; Automatically generated waypoints to cellular connectivity; Backtrack GPS data; Offline maps with custom route creation; Topographic maps for thousands of national and regional parks (U.S. only); Hundreds of curated hikes across all 63 U.S. national parks

  • Cycling

    Average speed, elevation gained, and distance; Connection to cycling accessories via Bluetooth; Functional Threshold Power; Power Zones; Cadence; Live Activity on iPhone

  • Swimming

    Pool swim or open water swim; Custom workouts for pool swims; Splits and auto sets; SWOLF score; Automatic stroke detection; Kickboard detection; Average pace, total distance, and laps

  • Safety

    Emergency SOS;¹² International emergency calling;¹³ Crash Detection;¹² Fall Detection; Noise monitoring; Backtrack

  • Durability

    Water resistance 50m (swimproof)¹⁴

  • Connectivity

    L1 GPS, GNSS, Galileo, and QZSS; 5G¹⁵ and LTE;¹⁶ Wi-Fi 4 (802.11n); Support for 2.4GHz and 5GHz Wi-Fi networks; Bluetooth 5.3; Apple Pay;¹⁷ GymKit; Support for Apple Watch For Your Kids;¹⁸ International roaming¹⁹

  • Accessibility

    Built‑in accessibility features supporting vision, mobility, hearing, and cognitive disabilities.

  • Dimensions

    1.57 x 1.34 x 0.42 inches

  • Weight

    0.93 oz

  • In the Box

    Apple Watch SE 3; Band; Apple Watch Magnetic Fast Charger to USB-C Cable (1m)
1. The Vitals app is for wellness purposes only and not for medical use.
2. Fast charging is compatible with Apple Watch Series 7 and later, any Apple Watch Ultra model, and Apple Watch SE 3.
3. Battery life varies by use and configuration. See apple.com/watch/battery for more information.
4. The temperature sensing feature is not intended for medical use. Temperature sensing is available only on Apple Watch Series 8 and later, Apple Watch SE 3, and all Apple Watch Ultra models.
5. The Cycle Tracking app should not be used for birth control or to diagnose a health condition.
6. Irregular rhythm notification requires the latest version of watchOS and iOS. It is not intended for use by people under 22 years old or those who have been previously diagnosed with atrial fibrillation (AFib).
7. Sleep apnea notifications are available on Apple Watch Series 9 and later, Ultra 2 and later, and SE 3. The feature is intended to detect signs of moderate to severe sleep apnea for people 18 years old or older without a diagnosis of sleep apnea.
8. Apple Watch SE 3 Ion-X glass is 4x more crack resistant than Apple Watch SE 2.
9. All-day battery life is based on the following use: 300 time checks, 90 notifications, 15 minutes of app use, and a 60-minute workout with music playback from Apple Watch via Bluetooth, over the course of 18 hours; Apple Watch SE 3 (GPS) usage includes connection to iPhone via Bluetooth during the entire 18-hour test; Apple Watch SE 3 (GPS + Cellular) usage includes a total of 4 hours of cellular connection and 14 hours of connection to iPhone via Bluetooth over the course of 18 hours. Battery life in Low Power Mode including sleep tracking is based on the following use: 430 time checks, 130 notifications, 20 minutes of app use, a 60-minute workout with music playback from Apple Watch via Bluetooth, and 6 hours of sleep tracking over the course of 32 hours; Apple Watch SE 3 (GPS) usage includes connection to iPhone via Bluetooth during the entire 32-hour test; Apple Watch SE 3 (GPS + Cellular) usage includes on-demand cellular connection and 24 hours of connection to iPhone via Bluetooth over the course of 32 hours. Testing conducted by Apple in July and August 2025 using preproduction Apple Watch SE 3 (GPS) and Apple Watch SE 3 (GPS + Cellular), each paired with an iPhone; all devices tested with prerelease software. Battery life varies by use, configuration, cellular network, signal strength, and many other factors; actual results will vary.
10. Charge times are from 0–80% and 0–100% using the included Apple Watch Magnetic Fast Charger to USB-C Cable. Testing conducted by Apple in July and August 2025 using preproduction Apple Watch SE 3 (GPS) and Apple Watch SE 3 (GPS + Cellular), each paired with an iPhone; all devices tested with prerelease software, Apple Watch Magnetic Fast Charger to USB-C Cable (Model A2515), and Apple 20W USB-C Power Adapter (Model A2305). Fast-charge testing conducted with drained Apple Watch units. Times measured from the appearance of the Apple logo as the unit started up. Charge time varies with adapter, region, settings, initial battery levels, usage, and environmental factors; actual results will vary.
11. Testing conducted by Apple in July and August 2025 using preproduction Apple Watch SE 3 (GPS) and Apple Watch SE 3 (GPS + Cellular), each paired with an iPhone; all devices tested with prerelease software, Apple Watch Magnetic Fast Charger to USB-C Cable (Model A2515), and Apple 20W USB-C Power Adapter (Model A2305). Charge time varies with adapter, region, settings, initial battery levels, usage, and environmental factors; actual results will vary.
12. Emergency SOS requires a cellular connection or Wi-Fi calling with an internet connection from your Apple Watch or nearby iPhone. You can use cellular models of Apple Watch to make an emergency call in many locations, provided that cellular service is available. Some cellular networks may not accept an emergency call from your Apple Watch if your Apple Watch isn't activated, if it isn't compatible with or configured to operate on a particular cellular network, if it isn't set up for cellular service, or if the cellular network does not support emergency calling over IMS. See support.apple.com/108374 and apple.com/watch/cellular for more information.
13. Requires Apple Watch Series 7, SE, Ultra, or later. For a list of supported countries and regions, see apple.com/watchos/feature-availability.
14. Apple Watch SE 3 has a water resistance rating of 50 meters under ISO standard 22810:2010. This means that it may be used for shallow-water activities like swimming in a pool or ocean. Apple Watch SE 3 should not be used for scuba diving, waterskiing, or other activities involving high-velocity water or submersion below shallow depth. Water resistance is not a permanent condition and can diminish over time. For additional information, see support.apple.com/109522.
15. Data plan required. 5G is available in select markets and through select carriers. Speeds vary based on site conditions and carrier. For details on 5G support, contact your carrier and see apple.com/watch/cellular.
16. Wireless service plan required for cellular service. Contact your service provider for more details. Connection may vary based on network availability. Check apple.com/watch/cellular for participating wireless carriers and eligibility. See support.apple.com/HT207578 for additional setup instructions.
17. To use Apple Pay you need a supported card from a participating card issuer. To check if your card is compatible with Apple Pay, contact your card issuer. Apple Pay is not available in all markets. View Apple Pay countries and regions.
18. Not all features will be available if the Apple Watch is set up through Apple Watch For Your Kids. Check support.apple.com/109036 for details. Wireless service plan required for cellular service. Check apple.com/watch/cellular for participating wireless carriers and eligibility.
19. International roaming coverage is determined by your carrier. Please check with your carrier for details. For a list of supported carriers, see apple.com/watch/cellular.