​Apple’s latest wearable update pushes both biometric accuracy and real-world utility forward, introducing what the company claims is the most accurate heart rate sensing ever built into a wearable device.

​For daily usability, the flagship software addition is a Live Rewind feature, which generates a rolling 15-second transcript of spoken audio. To address the immediate privacy concerns of an active microphone, Apple implemented a strict hardware-level safeguard: the audio is neither stored on the device nor recorded to the cloud, ensuring not even Apple can access the data.

​Pricing and Availability

​The standard Apple Watch model starts at $399, while the rugged Apple Watch Ultra model will retail for $799.