Watch Features: Speaker Microphone Siri Fall Detection Digital Crown with Haptic Feedback Emergency SOS Apple Pay Always-On Altimeter Noise Monitoring GymKit International Emergency Calling Crash Detection Compass Backtrack High and Low Heart Rate Notifications Irregular Rhythm Cycle tracking Double tap Mindfulness app 4‑core Neural Engine Medications app Sleep app including sleep stages Media playback Backtrack S10 chip with 64-bit dual-core processor Noise app
Time Display: Digital
Watch Height: 44 mm
Band Type: Sport Band
Band Color: Midnight
Band Size: S/M
Display Size: 977 sq mm
Display Resolution: 368x448
Pixel Density: 326 ppi
Display Technology: OLED LTPO
Display Touchscreen: Capacitive
Display Features: 1000 nits Brightness Always-On Retina display Tough Ion-X front glass with 4x crack resistance 2 nits minimum brightness
Sensors: Gyroscope Ambient Light Sensor Optical Heart Sensor Sleep Monitor High Dynamic Range Gyro High-g Accelerometer Temperature Sensor
In the Box: Magnetic Fast Charger to USB‑C Cable (1m) Band Apple Watch SE 3
Features that Reduce Environmental Impact: 100% recycled aluminum in the case 100% recycled tungsten in the Taptic Engine 100% recycled rare earth elements in all magnets 100% fibre‑based packaging 100% of expected customer use electricity matched with low‑carbon electricity 40% recycled content 100% recycled cobalt and 95% recycled lithium in the battery 100% recycled gold plating and tin solder in all Apple-designed printed circuit 40% recycled glass in the display glass 100% of manufacturing electricity for Apple Watch SE 3 is sourced from renewable electricity
Platform: Watch OS
Operating System Version: Watch OS 26
Depth (mm): 44 mm
Height (mm): 38 mm
Width (mm): 10.7 mm
Nominal Weight: 32.9 g
Maximum Operating Ambient Temperature: 35 °C
Maximum Non-Operating Ambient Temperature: 45 °C
Minimum Operating Ambient Temperature: 0 °C
Minimum Non-Operating Ambient Temperature: -20 °C
Max. Altitude Operating: 3000 m
Protection From Enviromental Effects: Water Resistance: 50 m
Notifications: High and Low Heart Rate Notifications Irregular Heart Rhythm Notification
