Apple
Apple Watch SE 3 40mm Midnight Aluminum Sport Band MidnightS/M
Apple
Your price*: $289.99
*Req's $10/mo. Smartwatch Plan & eligible monthly phone plan. First svc charges due at sale for new lines. If svc canceled, credits stop. Activ./upgrade (up to $25/line) & add'l fees may apply. Taxes, apply.
Free
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.See footnote1 Stay active with a wide range of workouts. Save time with fast charging.See footnote2 See your info at a glance with the Always-On display. And still get all-da y, 18-hour battery life.See footnote3
footnote1The Vitals app is for wellness purposes only and not for medical use.
footnote2Fast charging is compatible with Apple Watch Series 7 and later, any Apple Watch Ultra model, and Apple Watch SE 3.
footnote3Battery life varies by use and configuration. See apple.com/watch/battery for more information.
Health Essentials
Temperature sensingSee footnote1 enables richer insights in the Vitals appSee footnote2 and retrospective ovulation estimates. You’ll also get a daily sleep score, sleep apnea notifications,See footnote3 and be alerted if you have a high or low heart rate or an irregular rhythm.See footnote4
footnote1The temperature sensing feature is not intended for medical use. Temperature sensing is available only on Apple Watch Series 8 and later and all Apple Watch Ultra models.
footnote2The Vitals app is for wellness purposes only and not for medical use.
footnote3Sleep 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.
footnote4Irregular rhythm notification requires the latest versions 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).
Great Battery Life
Enjoy all-day, 18-hour battery life.See footnote5 Then charge up to twice as fast as SE 2See footnote6 and get up to 8 hours of battery in just 15 minutes.See footnote7
footnote5Battery life varies by use and configuration. See apple.com/watch/battery for more information.
footnote6Testing conducted by Apple in July and August 2025 using preproduction Apple Watch SE 3 (GPS + Cellular) and Apple Watch SE 2 (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.
footnote7Fast charging is compatible with Apple Watch Series 7 and later, any Apple Watch Ultra model, and Apple Watch SE 3.
Always-on Display
Now you can read the time and see the watch face without raising your wrist to wake the display.
OS
- WatchOS 26
Memory
- 64GB internal storage
Dimensions
- 40mm x 34mm x 10.7mm
Display Type and Size
- Always-On Retina display with OLED and LTPO
Connectivity
- Wi-Fi 4 (802.11n)
- Bluetooth 5.3
- 5GSee footnote1 and LTESee footnote2
- Support for Apple Watch For Your KidsSee footnote3
- Emergency SOSSee footnote4
- International emergency callingSee footnote5
Battery
- Built-in rechargeable lithium-ion battery
- Up to 18 hoursSee footnote6
Sensors
- Second-generation optical heart sensor
- Temperature sensorSee footnote7
- Compass
- Always-on altimeter
- High-g accelerometer
- High dynamic range gyroscope
- Ambient light sensor
footnote1Data 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.
footnote2Wireless 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.
footnote3Not 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.
footnote4Emergency 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.
footnote5Requires Apple Watch Series 7, SE, Ultra, or later. For a list of supported countries and regions, see apple.com/watchos/feature-availability.
footnote6Battery life varies by use and configuration. See apple.com/watch/battery for more information.
footnote7The 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.