Apple announced new Apple Watch models at its Gather Round event today at the Steve Jobs Theater in Apple Park. The Apple Watch Series 4 is available in 40mm and 44mm sizes, differing from the 38mm and 40mm options of previous models, and comes with a number of next-generation heart detection features.
The new models have screens 30 percent larger than previous versions, and allow new watch faces to display up to eight complications and more information in native apps.
The Digital Crown has been reengineered to include haptic feedback, while the built-in speaker is 50 percent louder to aid walkie talkie use and Siri requests.
Meanwhile, new heart detection features include the ability to perform electrocardiogram, or ECG readings, right out of the box, as well as rhythm detection for low heart rhythm, with background detection for atrial fibrillation, and low heart rate monitoring to detect very low blood flow from the heart.
The back of the Series 4 is made entirely of ceramic and sapphire crystal, with radio waves able to pass freely through the rear for better reception using LTE.
A new 64-bit Dual Core processor provides up to 2x faster performance over previous generation models, and faster accelerometer and gyroscope technologies allow for better sensitivity, such as detecting a physical fall.
The 44mm Apple Watch is available in GPS and GPS + Cellular versions, in Silver, Space Gray, and Gold aluminum case options, and stainless steel options in Silver, Space Black, and Gold.