Brand Name: COLMIModel Number: COLMI R12Certification: ceCertification: FCCOrigin: Mainland ChinaHigh-concerned chemical: NoneActivity Tracked: Activity TrackerActivity Tracked: Steps TrackerActivity Tracked: Distance TrackerActivity Tracked: Calorie TrackerWaterproof Grade: 5ATMCase Material: SteelItem Weight: about 3.3gNFC Support: NoMetrics measured: Heart Rate MonitorMetrics measured: Sleep MonitorMetrics measured: Blood Oxygen MonitorMetrics measured: Stress MonitorBattery Capacity(mAh): 15mAh (7#~9#), 18mAh(10#~13#)Display screen: YesChoice: yes