From May 2015, leather products come in contact with human skin may not be placed on the EU market by REACH regulation if they are shown to contain over 3 ppm of Hexavalent Chromium (Cr VI). For watch strap, a large amount of chromium is contained because of chromium tanning. Even if only Trivalent Chromium is contained when manufacturing the straps, it was already proved that Hexavalent Chromium is generated subsequently by oxidation. Therefore, Hexavalent Chromium (Cr VI) Elimination Agent was developed. This agent restores Hexavalent Chromium to Trivalent Chromium and prevent oxidation of Trivalent Chromium.

  Due to the diversification of users’ tastes and preferences in recent years, we have already released the solar powered analog watch with the TripleSensor system as an outdoor watch. However, since further multifunctional demand has increased, we have developed a radio wave solar powered analog watch with multiple functions achieved by the development of a quad sensor system. This quad sensor system has a newly developed water depth sensor and the TripleSensor system with an improved digital compass achieved by an automatic horizontal correction function with an acceleration sensor.

  We have developed SMART-LAP which is a new function of digital watch for marathon runners. The watch can automatically record the passing time of the timing system laid in the marathon course. We devised a method to detect the passage of the timing system from the trigger signal and examined arrangement of the receiving antennas from the analysis of the watch position during running. Furthermore, we optimized the receiving sensitivity and detection algorithm to achieve accurate time measurement.

  We equipped near-field wireless communication (NFC) and commercialized a training watch with connection function to training site (MY ASICS) operated by ASICS Co., Ltd. via dedicated application. In order to commercialize, we evaluated the influence of antenna position and magnetic sheet for communication distance. By optimizing the antenna position, it was possible to obtain a sufficient communication distance without a magnetic sheet