GPS
Optical heart sensor
Digital Crown
S3 with dual-core processor
Accelerometer and gyroscope
Swim proof
watch OS 5
Aluminum case
https://www.amazon.com/Apple-Watc…B07K37HK
GPS
Optical heart sensor
Digital Crown
S3 with dual-core processor
Accelerometer and gyroscope
Swim proof
watch OS 5
Aluminum case
https://www.amazon.com/Apple-Watc…B07K37HK