Apple Watch SE 3, GPS, Aluminum Case with Sport Band, 40mm

Size and Weight

• Height: 40mm
• Width: 34mm
• Depth: 10.7mm
• 324 by 394 pixels
• 759sq mm display area
• Weight (GPS): 26.3 grams

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
• Compass
• Always-on altimeter
• High-g accelerometer
• High dynamic range gyroscope
• Ambient light sensor

Health and Wellness

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

Display

• Always-On Retina display with OLED and LTPO
• Tough Ion-X front glass with 4x crack resistance5
• Up to 1000 nits peak brightness
• 2 nits minimum brightness
• 326 pixels per inch

Audio

• Speaker
• Microphone
• Media playback

Power and Battery Life

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

Operating System

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

Safety

• Emergency SOS
• International emergency calling
• Crash Detection
• Fall Detection
• Noise monitoring
• Backtrack

Durability

• Water resistance 50m (swimproof)

Connectivity

• All Models
• Support for 2.4GHz Wi-Fi networks
• Wi-Fi 4 (802.11n)
• Bluetooth 5.3
• L1 GPS (GLONASS, Galileo, QZSS, and BeiDou)
  
• Apple Pay
• GymKit

Compatibility

• iPhone 11 or later, including iPhone SE (2nd generation or later), with iOS 26 or later

In the Box

• Apple Watch SE 3
• Band
• Apple Watch Magnetic Fast Charger to USB‑C Cable (1m)