Apple unveiled two new smartwatch models today: the Apple Watch Ultra 4 and the Apple Watch Series 12. While the Series 12 closely resembles last year’s Apple Watch Ultra 3 in design, it is powered by Apple’s latest S11 processor, replacing the older S10 chip. This upgrade is expected to improve performance and prepare the devices for the upcoming watchOS 27, which includes a more advanced Siri AI assistant. The new S11 chip will also support more sophisticated features and better overall functionality. The Apple Watch Ultra 4 introduces several health-focused improvements. It features an enhanced sensor with upgraded electrodes for more accurate ECG (electrocardiogram) readings and more energy-efficient green LEDs for precise heart rate monitoring. These upgrades allow the Ultra 4 to take heart rate measurements up to 60 times more frequently than previous models—every five seconds—and heart rate variability readings every five minutes. This increased frequency can help users track their health more closely during physical activities or throughout the day. The Apple Watch Ultra 4 builds on the features of its predecessor, the Ultra 3, which launched last year with improvements such as longer battery life, 5G connectivity for cellular models, satellite-based messaging and emergency calling, and a slightly larger display with a thinner bezel. The watchOS 27 update will also bring a redesigned app grid, better health and fitness tracking, and battery life optimizations to enhance the user experience. Apple also introduced new Audio Intelligence features for the Series 12 and Ultra 4. One feature, Siri Recaps, allows the watch to provide daily summaries of conversations and events using its sensors, which can be activated through a schedule or the Smart Stack interface. Another feature, Live Rewind, generates a transcript of the last 15 seconds of audio, regardless of whether a wake word was spoken. While these features could benefit users with hearing impairments, they have raised privacy concerns, as some users may feel uncomfortable with the idea of being constantly monitored. Apple states that the features do not record or store audio, and data is processed in real-time using Siri AI without permanent storage. However, the potential for unintended recording remains a point of concern for many.