The new Apple Watch made its global debut this afternoon, and there are more improvements than anyone expected.

What you’ll discover is that Apple made the display larger but the bezel smaller. That’s accomplished while keeping the overall design on the attractive side. Even so, the Apple Watch Series 4 comes in 40mm and 44mm sizes. These are bigger than the Apple Watch’s traditional 38mm and 42mm sizes, but it’s the reduced bezel that maintains a compact feel.

Apple also introduced a new black ceramic and sapphire design that’s not only durable but better for wireless signals to travel. The Apple Watch Series 4 swapped out the physical crowd for a digital crown, too. Rather than being an actual button, it utilizes vibrations for haptic feedback.

The Apple Watch Series 4 should be up to two times faster than its predecessors. Inside, there’s a dual-core S4 chip based on 64-bit architecture.

During the launch event, Apple discussed three primary areas for its smartwatch — communication, activity, and health. Like previous models, the Apple Watch Series 4 can take advantage of GPS and cellular connectivity. It also has the usual batch of behavior-tracking features.

The health-related features are maybe where Apple’s made the most advancements. You can still use the heart rate sensor for basic information, but the Apple Watch Series 4 goes deeper by using an FDA-approved electrocardiogram (ECG) sensor. Just place your finger on the digital crown to get rich information.

As for other software, the Apple Watch Series 4 ships with watchOS 5 out of the box.

The Apple Watch Series 4 doesn’t skimp on style, either. There are three basic colors — Silver, Space Gray, and Gold. Apple also collaborated with Nike and Hermès for unique bands.

Apple says it’ll release the Apple Watch Series 4 on Friday, September 21. You can pre-order it later this week starting at $399 for GPS and $499 for cellular.