ADVIZOR User Guide introduces the features of ADVIZOR wristwatch, including basic information, main functions (modes), button functions, LCD screen display, measurement and units, pressure sensor calibration, maintenance and service, heart rate monitor, stopwatch sub-mode, interval countdown timer sub-mode, HRM heart rate storage, time mode, alarm sub-mode, dual time sub-mode, altimeter mode, altitude difference measurement sub-mode, 24-hour storage sub-mode, log book sub-mode, log book history sub-mode, barometer mode, pressure difference measurement sub-mode.