Brand Name: COLMIModel Number: COLMI R02Certification: ceHigh-concerned chemical: NoneActivity Tracked: Activity TrackerActivity Tracked: Steps TrackerActivity Tracked: Distance TrackerActivity Tracked: Calorie TrackerWaterproof Grade: 3ATMCase Material: SteelItem Weight: 4.7gBattery Capacity(mAh): 17mAhNFC Support: NoOrigin: Mainland ChinaMetrics measured: Heart Rate MonitorMetrics measured: Sleep MonitorMetrics measured: Blood Oxygen MonitorMetrics measured: Stress MonitorDisplay screen: NoChoice: yes