Hi
Some differences between model ranges that you may find helpful to note include:
- Apple Watch (1st generation) models have a single core processor.
- Newer models - in the Series 1 and Series 2 ranges - have a faster, dual-core processor.
- 1st generation and Series 1 models are splash and water resistant, but should not be submerged.
- Series 2 models have:
A higher level of water resistance, being suitable for wear whilst shallow water swimming.
- This feature can track your route during workouts and, subject to it being connected to a trusted Wi-Fi network at the time, help you to locate a lost watch.
All Apple Watch models are able to run the latest software (watchOS) version.
You may find the following resources helpful when choosing your watch: