Apple Watch Series 8 and the second-generation Apple Watch SE are set to launch this Friday, September 16.

Both new models are incremental upgrades compared to the Apple Watch Series 7 and the original Apple Watch SE.

New features for both models include the S8 chip, car crash detection, and international roaming.

The Series 8 also has a new temperature sensor to aid the existing menstrual cycle tracking feature.

Series 8 pricing starts at $399, which is unchanged from Series 7.

Both models are overshadowed by the all-new Apple Watch Ultra, which is set to launch upcoming Friday,

On September 23, it'll launch with a more significant 49mm titanium case, a larger display, a more rugged design and more.

Apple Watch Ultra is priced at $799.