OLED Display Smart Wristband Tracker

Features:Time: displays current time.Step: display movement steps.Power: show current capacity.Alarm clock: show alarm clock reminder.Mileage: display step mileage.Heat: shows the heat of movement.Heart rate: monitor current heart rate.Descriptions:Call reminder: please call your cell phone.SMS reminder: remind the phone to receive text messages.Sleep: monitor during sleep at night.Specifications:Sensor: 3D gravity sensorHeart rate sensor: reflective photoelectric heart rate sensorDisplay: 0.69 inch OLEDBattery capacity: 45mAhStandby time: 30 daysSystem: for Android 4.4 and above, for IOS 8.0 or above Bluetooth: 4.0Mode of operation: touch screenReminder: high sensitivity, built-in motorWaterproof grade: IP67 class, deep waterproofStrap material: siliconeProduct size: 36mm*14mm*11mmColor: black, grayType: thread patternPackage Include:1 x Smartband1 x User ManualNotes: Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarant