New features on board include "double tap", a new gesture feature to control to the watch without touching its face, and improved dictation and brightness.
The Series 9 starts at $399, while the Ultra 2, at $799, is priced at the same level as the earlier base model.
The Series 9 is the company's first carbon neutral product, and starting this year all watch manufacturing will be powered by 100% clean energy, the company said. Apple will also drop leather from all its products, including the watch bands.
Apple released the second-generation AirPods Pro, priced at $249.
It will feature improved sound quality and double the active noise cancellation than its predecessor. It will also come in more ear tip sizes. (Reporting by Yuvraj Malik in Bengaluru; Editing by Sriraj Kalluvila)
