Like the iPhone did for cell phones, the Apple Watch has changed the market of health and fitness trackers forever. While the iPhone was the biggest product launch under Steve Jobs, the Apple Watch has become Tim Cook’s biggest product launch since taking over after Jobs’ death in 2011.

The original Apple Watch was first announced in September 2014, and since that time, we’ve had a decade of Apple Watch models for every budget and person. That decade has seen a lot of changes in the Apple Watch, and while the general shape hasn’t changed, we’ve seen many new features, slimmer bezels, and even a new rugged outlook for certain models.

Join us in a walk down memory lane as we visit every Apple Watch release and reminisce about what made each one special and how we got to the current Apple Watch Series 10.

Like the original iPhone, which was announced on January 9, 2007, but released on June 29, 2007, the first Apple Watch was announced quite a few months before it hit store shelves. The original Apple Watch was announced on September 9, 2014, but didn’t go on sale until April 24, 2015.

The Apple Watch was billed as Apple’s “most personal device ever.” Like Fitbit devices, which were number one at the time, the Apple Watch had a built-in heart rate sensor and an accelerometer, and it used your paired iPhone for location data to help track key metrics during your workout sessions.

But the first Apple Watch was so much more than just another health tracker. It was the first wearable to get iPhone notifications, utilize Apple Pay, and crucially, it was the first to really allow users to communicate through their wrist by sending and receiving calls and messages. The small display was perfectly optimized to be a special user interface to give you information at a glance. It also offered unique watch faces and the Digital Crown, which has since become as iconic as the iPod Click Wheel.

Apple introduced the Apple Watch in three varieties: the Apple Watch, Apple Watch Sport, and the infamous Apple Watch Edition, which was made with pure 18-karat gold and started at $10,000 and went up to $17,000. The regular non-Edition models started at $349.

Though the original Apple Watch was revolutionary at the time, it also had one problem: speed. The Series 0 was often slow to act, to the point where it would have been faster to simply launch the app on your iPhone.