User manual CITIZEN WATCH C46

[. . . ] Features This watch allows you to display the time in 30 cities and UTC ( universal time coordinated ) time worldwide by a simple button operation. The watch is also equipped with an internal EL (electroluminescence) lamp function that allows you to read the display even in the dark. Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Name of Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Switching Modes (Functions) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] (5) When all the desired cities have been set, press the M button again to return to the normal zone setting display. * The zone setting adjustment mode (flashing display) will automatically return to the normal display if left for more than two minutes with no input. 13. When These Problems Occur . . . <The Watch Shows Abnormal display> When the battery life is close to expiring, the display or functions may become abnormal. may cause the display or functions to become abnormal (no display, alarm sounds incessantly, etc. ). In this case, perform the all-reset operation by referring to "14. <Following Battery Replacement> After the battery has been replaced, perform the all-reset operation by referring to "14. How to Handle the Calculating Functions Some are not equipped with this function depending on the model. · Use the calculating functions of this watch as a guideline only. · This scale cannot be used for position of the decimal point. Name of Scale · Marking ER LIT S. T. This completes the all-reset operation. Set each mode correctly before using the watch. Distance Conversion (Kilometers/miles/nautical miles) 26 Speed Index S. FU EL L BS . Volume-weight Conversion (Liters/U. S. gallons/IMP. (imperial) gallons/fuel pound/oil pound) Fuel conversion (Liters/U. S. gallons) OIL LBS. IMP. GAL. U. S Inner scale outer scale GA L. 27 A. Navigational calculation 1) Time required Example : Obtain the time required for the flight of an aircraft at 180 knots for 450 nautical miles. Answer : Align "18" on the outer scale with the SPEED INDEX () on the inner scale. Then, "45" on the outer scale corresponds to "2:30" on the inner scale (time scale) . 2) Knots (air speed) Example : Obtain the knots (air speed) for 240 nautical miles with a flight time of 1 hour and 20 minutes. Answer : Align "24" on the outer scale with "1:20" on the inner scale (time scale) . Then, the SPEED INDEX () on the inner scale corresponds to "18" on the outer scale. 3) Flight distance Example : Obtain the air distance when the air speed is 210 knots and the flight time is 40 minutes. Answer : Align "21" on the outer scale with the SPEED INDEX () on the inner scale. Then, "40" on the inner scale corresponds to "14" on the outer scale. 28 4) Rate of fuel consumption Example : Obtain the rate of fuel consumption (gallons/hour) when the flight time is 30 minutes and the fuel consumption is 120 gallons. [. . . ] · To clean a metal, plastic, or rubber watchband, wash away dirt with mild soap and water. Use a soft brush to remove dust and dirt jammed in the gaps in the metal band. NOTE: Avoid using solvents (thinner, benzine, etc. ), as they may mar the finish. WARNING: Handling of the battery · Keep the battery out of the reach of small children. [. . . ]