针对智能手表睡眠监测的准确性，北京清华长庚医院耳鼻咽喉头颈外科副主任医师、睡眠医学中心副主任张俊波指出，智能手表通过心率、脉搏波等信号推测睡眠，其最准确的睡眠结构监测准确度也仅在70%左右 1。因此，智能手表不能作为睡眠质量的唯一标准 1。张俊波强调，判断睡眠质量最重要的就是要有节律，以及能不能恢复白天的状态，应结合白天精神状态综合评估 1。他表示，智能手表的核心价值在于长期监测睡眠节律和筛查血氧问题 1。
针对长期佩戴智能手表导致手腕皮肤发白、粗糙、增厚等现象，首都医科大学附属北京同仁医院皮肤科主治医师陈雪解释，这主要与金属过敏、橡胶过敏、染料、黏合剂等致敏物质引发的表带材质过敏，以及佩戴过紧、汗液和清洁剂刺激有关 1。她指出，智能手表心率监测的绿光波段还没有非常直接的科学证据证明它是造成光老化的一个因素，且智能手表是低压的锂电池，低压的电源不会造成明显的电灼伤风险，因此皮肤问题并非由绿光照射、漏电或低温烫伤所致 1。
Smartwatches estimate sleep by analyzing signals such as heart rate and pulse waves, but their accuracy for sleep structure monitoring is only about 70%, meaning they should not be the sole standard for evaluating sleep quality 1. Zhang Junbo, deputy director of the Sleep Medicine Center and associate chief physician of the Department of Otolaryngology Head and Neck Surgery at Beijing Tsinghua Changgung Hospital, emphasized that the most critical factors in determining sleep quality are maintaining a regular rhythm and the ability to fully recover during the day 1. Therefore, he advised combining the devices' data with daytime mental state for a comprehensive assessment, noting that the core value of smartwatches lies in the long-term monitoring of sleep rhythms and screening for blood oxygen issues 1.
Regarding skin issues caused by prolonged smartwatch use, Chen Xue, an attending physician in the Dermatology Department at Beijing Tongren Hospital, Capital Medical University, clarified that symptoms like whitening, roughness, and thickening of the wrist skin are primarily linked to allergic reactions and physical irritation rather than the device's operational features 1. She explained that these skin conditions are mainly caused by allergies to band materials—such as metals, rubber, dyes, and adhesives—combined with wearing the watch too tightly and exposure to sweat and cleaning agents 1. Chen also debunked common misconceptions, stating that there is no direct scientific evidence proving the green light used for heart rate monitoring causes photoaging, and that the low-voltage lithium batteries pose no significant risk of electrical leakage or low-temperature scalds 1.
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