Apple announced a new version of the Apple Watch that has a bigger screen (32 percent bigger for the 40mm size and 35 percent bigger for the 44mm size over the previous generation), one that extends out to the edges and has a more curved look on the four corners.

“The display is seamlessly integrated into the interface,” claimed Jony Ive, the chief design officer, in a promo video. The new version lets you take an electrocardiogram to find out if you have heart problems, the first gadget to do that. The device can now detect if you take a fall and can call 911. Apple said it tested more than 1,000 people and adjusted algorithms to detect these accidents. The watch uses a faster S4 processor and the display looks brighter than ever. The speaker, now located on the opposite side of the microphone, is also much louder, making it easier to access Siri, make phone calls, and listen to music streams. The Apple Watch Series 4 still only lasts a day (18 hours to be exact).

The Series 4 will be available on September 21 and can be pre-ordered later this week. It comes in silver, gold, and space gray and in stainless steel, there’s also a new color called gold stainless. The new model costs $399 for the version without cellular and $499 with cellular. Prices go up from there as you pick high-end bands and materials.