Core Viewpoint - Apple Watch is set to introduce a new feature for monitoring atrial fibrillation (AF) history, which has received medical device registration approval in China, indicating a significant expansion of its health monitoring capabilities in the region [2][3]. Group 1: Product Features and Updates - The "Atrial Fibrillation History Feature" will be available for Apple Watch users in China, expected to be included in the next iOS or watchOS update [2]. - This feature is specifically designed for users aged 22 and above who have been diagnosed with atrial fibrillation, allowing them to retrospectively estimate the duration of AF episodes [12]. - The Apple Watch will periodically check users' heart rates to detect signs of atrial fibrillation and provide a weekly summary of the percentage of time spent in AF [15][16]. Group 2: Health Implications and Market Context - Atrial fibrillation is a common heart condition that can lead to serious complications, including heart failure and increased stroke risk, with a prevalence rate of 1.6% among adults in China, affecting nearly 20 million people [9]. - The introduction of this feature aligns with a growing trend in wearable technology, where companies like Apple are enhancing health monitoring capabilities to address chronic health issues [20][21]. - The feature is not intended as a diagnostic tool but serves as a management tool for patients, providing insights into how lifestyle factors may influence their heart condition [18][20].