Apple reveals Apple Watch Series 8 and the new Apple Watch SE

Apple Watch Series 8 delivers best-in-class health features, including an innovative temperature sensor that enables advanced features for women’s health, and Crash Detection for severe car crashes

The redesigned Apple Watch SE delivers the core Apple Watch experience at a new starting price

Apple introduced Apple Watch Series 8 and the new Apple Watch SE, which bring groundbreaking technology and performance, and important safety innovations to the two best-selling smartwatches. Apple Watch Series 8 features the beloved design of the Apple Watch, including a large, Always-On Retina display and a strong crack-resistant front crystal. With all-day 18-hour battery life, Apple Watch Series 8 builds on best-in-class health and safety features like the ECG app and fall detection by introducing temperature-sensing capabilities, retrospective ovulation estimates, Crash Detection, and international roaming. The new Apple Watch SE delivers the core Apple Watch experience, including Activity tracking, high and low heart rate notifications, and Emergency SOS, as well as the new Crash Detection feature and a completely redesigned back case that perfectly matches the three classic case finishes. introducing new and more customizable watch faces like Lunar and Metropolitan, an enhanced Workout app, sleep stages, a first-of-its-kind AFib History feature, and an all-new Medications app.

“We hear from customers how Apple Watch helps them stay connected with loved ones, be more active, and live healthier lives,” said Jeff Williams, Apple’s chief operating officer. “Apple Watch Series 8 reinforces our commitment in these areas with the addition of pioneering technology, while Apple Watch SE brings advanced core features at a new starting price. Powered by watchOS 9, the best smartwatches deliver more capabilities than ever before.”

Wrist Temperature Sensing for Women’s Health

The menstrual cycle is an important marker of health, and many physicians consider it a vital sign. Apple Watch Series 8 features innovative new temperature-sensing capabilities that give women further insights into their health, designed with the same privacy protections as with all other health data.

Apple Watch Series 8 takes a unique approach to temperature sensing with a two-sensor design — one sensor on the back of the watch, nearest the skin, and another just under the display — reducing bias from the outside environment.

Nighttime wrist temperature can be a good indicator of overall body temperature. The sensors in Apple Watch Series 8 sample the wrist temperature during sleep every five seconds and measure changes as small as 0.1° C. In the Health app, users can see nightly shifts in baseline temperature, which can be caused by exercise, jet lag, or even illness.

Utilizing the new temperature-sensing capabilities in Apple Watch Series 8, users can receive retrospective ovulation estimates. Knowing when ovulation has occurred can be helpful for family planning, and Apple Watch Series 8 makes it easy and convenient by providing these estimates in the Health app. Temperature sensing also enables improved period predictions.

Additionally, with iOS 16 and watchOS 9, all Cycle Tracking users can now receive a notification if their logged cycle history shows a possible deviation, such as irregular, infrequent, or prolonged periods, and persistent spotting, which can be symptoms of underlying health conditions.

Crash Detection

To enable Crash Detection, Apple developed an advanced sensor-fusion algorithm that leverages a new, more powerful gyroscope and accelerometer on Apple Watch, which now has the highest dynamic range accelerometer in any smartwatch. To create the algorithm, data was collected from these new motion sensors at professional crash test labs with common passenger cars in simulated real-world accidents, including head-on, rear-end, side-impact, and rollovers. In addition to motion data, Crash Detection uses the barometer, GPS, and the microphone on iPhone as inputs to detect the unique patterns that can indicate whether a severe crash has taken place.

When Apple Watch detects a severe car crash, the device will check in with the user and dial emergency services if they are unresponsive after a 10-second countdown. Emergency responders will receive the user’s device location, which is also shared with the user’s emergency contacts. When combined, Crash Detection on Apple Watch and iPhone work seamlessly to get users help efficiently. When a severe car crash is detected, the emergency services call interface will appear on Apple Watch, as it is most likely to be in closer proximity to the user, while the call is placed through iPhone if it is in range for the best possible connection.

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Low Power Mode

To keep users connected for even longer, a new Low Power Mode can extend battery life to reach up to 36 hours for Apple Watch Series 8 with iPhone present. This new mode temporarily disables or limits select sensors and features, including the Always-On Retina display, workout autostart, heart health notifications, and more.