Some of the modules incorporate highly advanced functions. The Riseman features twin sensors that measure both temperature and atmospheric pressure, thus allowing it to serve as a barometer and altimeter. The Raysman was the first model to make use of Tough Solar technology to power its functions, the Wademan featured a digital compass, the Fisherman helped introduce the now-common tide graph and moonphase readouts, and the Antman was the first Casio watch that received an atomic signal that calibrated its timekeeping with atomic clock transponders in Japan.