-  Reveals the state of mood according to the color of the indicator. Blue means relax, green means calm, red      means tension and black means stress.
  -  Can be combined with our other products, such as Forehead Thermometers, UV Indicator Cards etc., to      become a multifunctional products.
  -  No mercury, non-toxic, safe for health and environment.
  -  No batteries required, Unbreakable and Reusable.
  -  Pocket size, can be used at home or traveling.
  -  Logo and advertisement printing allowed, can be produced in any color, design and shape.,
  -  Perfect promotion gifts, create a powerful brand reminder to your clients.