
The first Apple Watch debuted almost 11 years ago on April 24, 2015, and while Cupertino didn’t invent the smartwatch, Apple’s square-shaped wearable is easily the most popular and recognizable smartwatch in the world today.
2026 marks 50 years of Apple, and to celebrate the brand’s history, I’ve taken a look back through the brand’s entire catalog of smartwatches — from the original ‘Series 0’ to the current Series 11, Ultra 3, and SE 3 — to narrow down the ten most significant Apple Watch innovations that revolutionized wearable tech.