Smart Bracelet Heart Rate Bluetooth Waterproof Black

Function: heart rate, measurement, number of steps, calorie burning, automatic sleep measurement, alarm clock, bluetooth connection to mobile phone control photoWeather forecast, temperature indicationMetal body design, anti-scratch treatment, wear resistanceWaterproof and dustproof: sweat proof, rain proofBand size: 26*2*0.2cmBody size: 4.1*3.4*1cmData storage :7 days of detailed motion dataSupport for multiple languagesCan be used independently or simultaneously by mobile APP
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a