Apple Watch Series 12与Ultra 4发布，AI功能支持对话回放与摘要生成
9月9日，Apple在库比蒂诺举行的iPhone发布会上推出了Apple Watch Series 12和Apple Watch Ultra 4。两款智能手表硬件设计变化不大，但软件方面引入了多项AI驱动功能，瞄准日益增长的AI可穿戴设备市场。
新品主打“Audio Intelligence”音频智能特性。其中“Live Rewind”功能允许用户回溯最近15秒的对话内容，双击数码表冠即可将此前15秒的对话以文本片段形式呈现，用户还可向Siri询问该段记录的内容，或将其保存至全新的Siri App中稍后查看。另一项“Siri Recap”功能则通过环境收音为日常对话自动生成标题和要点摘要，例如团队会议或家长会的关键信息，并借助Apple Intelligence在Siri App中生成。Apple表示，这些音频智能功能不会创建或存储音频录音。
健康传感系统方面，新一代手表增加了电极表面积以改善心电图读数时的皮肤接触，重新设计的环形光电二极管可更高效地捕捉光线，更省电的绿色LED灯支持全天精准心率测量。背景心率读数现在全天每五秒记录一次，频率为此前的60倍。新品还新增“准备就绪”评分，可结合近期活动、生命体征和睡眠情况，在早晨综合为单一评分反映身体状态；“健康年龄”功能则可基于VO2 Max、睡眠等数据，展示用户关键健康指标与实际年龄的对比。
价格方面，Apple Watch Series 12起售价399美元，Apple Watch Ultra 4起售价499美元。
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