[Brain NIRS]Brain NIRS, Blood volume visualization device in the brain, Hb131S Brain-NIRS System ! Wearable brain blood visualization Device ! Wearing sun-visor, measuring start ! Extremely lightweight (110g) NIRS device ! System features - Extremely lightweight of 110g (Sun Cap type) - Stretch fabrication - Size : M/L size for men, M/S for women, S for kids - Increasing accuracy of deep layerby..