​Darta Systems has launched their Emvio watch  that measures stress and helps users to simplify everyday stress management. Emvio uses heart rate variability and a proprietary algorithm to calculate stress levels, and is meant to be used all day, every day. It is this algorithm and the sensitivity of the optical sensors that make Emvio unique among other stress wearables that have come onto the market.  Emvio can help leaders and people working in fast­paced environments.