Apple Watch Ultra 4 Released, Featuring Refreshed Sensors and AI Capabilities

In this model, the healthcare sensors have been completely refreshed. The arrangement of electrodes, photodiodes, and green LEDs has been modified, and the device has been made thinner, with a thickness of 12mm. According to Apple, the sensor overhaul increases the frequency of heart rate and heart rate variability (HRV) monitoring, allowing for more accurate data measurement.

Additionally, the device now supports "Audio Intelligence," powered by the S11 chip. This feature analyzes ambient sounds, including sound recognition that detects and notifies users of noises like sirens or doorbells, and a Shazam-like function that instantly identifies music titles. While natural conversational interaction via Siri AI is supported, Japanese language support is expected later this year.

Battery life offers up to 50 hours of normal use and up to 45 hours in long-duration workout mode.