s20 active 2 44mm smart watch ip68 waterproof real heart rate smart watchs dropshipping mood tracker answer call passometer boold pressure w

support languages: chinese, english, japanese, russian, spanish, french, italian, german, portuguese and thai support 24-hour regular heart rate monitoring. exercise steps, heat consumption and mileage record objectively, scientifically and quantitatively record and analyze your sleep state, and turn it on automatically from 9 o'clock every night to 9 o'clock the next morning heart rate, ecg, blood pressure, blood oxygen, step watch, satch, music control, bluetooth pgraphy compatible operating system: for ios - apple for firefox operating system for blackberry 10 for windows phone 8 for android.syi