Apple Watch SE
44mm or 40mm case size
aluminum metal
speaker
microphone
control:
Touch-responsive digital crown
side button
Siri
monitor:
Retina LTPO OLED display
Ion-X glass surface
Up to 1000 nits maximum brightness
chip:
S8 SiP features a 64-bit dual-core processor
2 Core Apple Neural Engine
32GB capacity
sensor:
Second generation optical heart rate sensor
High or low heart rate notification Footnote 4
Arrhythmia Notice Footnote 5
sleep stages
The compass app has waypoint and backtracking functions
Changqi altimeter
High g-force acceleration sensor
High dynamic range gyroscope
ambient light sensor
water proof:
Water resistant to 50 meters (suitable for swimming) Footnote 10
Connections and communications:
L1 GPS, GLONASS, Galileo and QZSS positioning systems
LTE and UMTS Footnote 13
Wi-Fi 4 (802.11n)
Bluetooth 5.3
Apple Pay
GymKit
Power and battery life:
Built-in rechargeable lithium-ion battery
Typical use up to 18 hours Footnote 15
USB-C magnetic charging cable