HeHa Qi is approved health monitor by *Harvard & TW Hospital, also a striking smart wristband fitness tracker in CES 2016. * A data collection tool in clinical research at Brigham and Women's Hospital, an affiliate of Harvard Medical School and used as a dedicated device in clinical research by National Taiwan University Hospital. HRV is a new method for assessing the effects of stress on body. It's measured as the time gap between heart beats that varies as breathe in and out. In general, a high HRV indicates dominance of the parasympathetic response, the side of the autonomic nervous system that promotes relaxation, digestion, sleep, and recovery. The parasympathetic system is also known as the ¡°feed and breed¡± or ¡°rest and digest¡± system. A low HRV indicates dominance of the sympathetic response, the fight or flight side of the nervous system associated with stress, over training, and inflammation. That¡¯s why more and more people has been using HRV for decades to track the health and recovery of their patients, and it¡¯s why HRV is a predictive indicator of overall heart health, risk of heart attack, and other cardiac events. Health Monitor 2-min health check, your electrocardiographic signals are measured for HRV analysis. Including, Restoration: the activity of parasympathetic nervous system which determines your ability to switch from a tensed state to a relaxed state. Biological Age: What your actual body age is. Stress: How stressed you are. Balance: Assessing the balance of your autonomous nervous system. Features: Bluetooth Version: V4.0 Smartphone Compatible: Most smart phone(iPhone 5 / iOS 7.0 and above / Android 4.0 and Above) Endurance: 30 days Charging: 1 - 2 Hours (Charge for 8 hours before the first use) Memory: Record data of 7 daysPackage Included : 2 X HeHa Qi Fitness Bands
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