Jointly developed by HeHa and the National Central University of Taiwan, HeHa Qi smart watch determines the health condition of the Autonomic Nervous System (ANS) through monitoring your ECG data and conducting Heart Rate Variability (HRV) monitor assessments, actually is health product.
 
Feature:
•    Uses the HHT algorithm of NASA
•    Clinical study by BWH of Harvard University
•    2-minutes body check to derive health analysis and heart rate variability
•    3-minutes stress relief breath training
•    Sleep tracker for medical use (88% accuracy)
•    Clipper fashion watch design, portable, easy to carry
•    Anti-allergic, waterproof, interchangeable silicon watch wrist band
•    Steps counting pedometer 
•    Calories burning calculation
•    LCD time digital watch display with silent alarms
•    V 4.0 Bluetooth version
•    iPhone & Android smartphone compatible
•    7 days memory record data
•    30-day battery life after recharge
•    HeHa Health app: multi-language
•    operating system: android 4.3 or above, iOS7 or above(iphone 5 or above), not support window mobile
•    Size: 220 x 20 x 12mm
•    HeHa wrist band smart watch are For Men and For Ladies
•    3 colors wristwatch: black, blue, pink
•    Packaging box, manual, warranty, USB charger, clip holder,wrist band
•    International warranty: 1 year
•    Certificate of SGS safety quality test (CE,FCC,RoHS,Reach,WEEE)