Apple Watch SE GPS, 2nd generation- 40mm

Health and Wellness

• High and low heart rate notifications
• Irregular rhythm notification
• Sleep Stages
• Cycle Tracking

• Be alerted if it detects unusually high or low heart rates or an irregular rhythm,14 as well as measure your current heart rate. And learn more about your time asleep with Sleep Stages.

Safety and Emergency

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

• Emergency SOS to call for help and alert emergency contacts. Fall Detection if you’ve taken a hard fall. Crash Detection for help in the event of a severe car crash.

Technology

• Second-generation optical heart sensor
  
• Dual-core S8 SiP
• Digital Crown with haptic feedback
• L1 GPS
• Compass with redesigned app
• Always-on altimeter
• High-g accelerometer
• Gyroscope
• Second-generation speaker and mic

• Optical heart sensor for measuring your heart rate and heart rhythm. New S8 SiP for up to 20% faster performance than the previous generation. New Crash Detection with high-g accelerometer, high dynamic range gyroscope, barometer, GPS, and advanced sensor-fusion algorithm trained on over 1 million hours of real-world drive and crash data to detect a severe car crash.

Case Size And Weight

• 40mm by 34 mm by 10.7mm (40mm)
• 26.4 grams (GPS)

Display

• 40mm
• 324 by 394 pixels
• 759 sq mm display area

• Retina LTPO OLED display
• Up to 1000 nits brightness

Features

• L1 GPS, GLONASS, Galileo, and QZSS
  
• Compass
• Always-on altimeter
• Water resistant
• 50 meters
• Second-generation optical heart sensor
• Emergency SOS
• High-g accelerometer
• Up to 256 g-forces with Fall Detection and Crash Detection
• High dynamic range gyroscope
• Ambient light sensor
• Speaker
• Microphone
• GymKit
• Capacity 32GB
• GPS
• Nylon composite and sapphire crystal back
• GPS

Chip

• S8 SiP with 64-bit dual-core processor
• Up to 20% faster than previous generation

• W3
• Apple wireless chip

Connectivity

• Wi-Fi
• 802.11b/g/n 2.4GHz
• Bluetooth 5.3

• Built-in rechargeable lithium-ion battery
• Up to 18 hours

• USB-C magnetic charging cable