These are tools conforming to the JKA (Japan Karate Association) Tournament Rules & Regulations. There is a score calculator for Kata and a timer for Kumite. The score calculator calculates the total score automatically excepting the maximum and minimum for Kata events, so that you need not calculate manually. The timer for Kumite can ring the first bell. You can configure the match duration and the timing of the first bell according to WKF (World Karate Federation). The digital Kata cards is an