The first smart health bracelet that has passed the national second-class medical device certification for blood oxygen saturation and medical-grade blood oxygen wearable device (CFDA). Test content: blood oxygen test (Class II medical device), static heart rate test (medical grade), sleep quality test, sleep disordered breathing test, cardiac HRV test, exercise heart rate test. Scientific ECG health management. The smart terminal downloads the APP "Racefit pro" to connect the device to obtain health reports and health value-added services.首款通过国家二类医疗器械认证血氧饱和度智能健康手环，医疗级血氧穿戴设备（CFDA），持续监管每日健康并实时提示。检测内容：血氧检测（二类医疗器械）、静态心率检测（医疗级）、睡眠质量检测、睡眠呼吸障碍检测、心脏HRV检测、运动心率检测。科学的心电图健康管理。智能终端下载APP“Racefit pro”连接设备获取健康报告和健康增值服务。