CAL. YM91 CHRONOGRAPH ● Hour, minute and small second hands ● Date displayed in numerals STOPWATCH ● Measures up to 60 minutes in 1/5 second increments. ● Split time measurement 01_YM91A(E)001-016 Page 1 05.6.30, 3:54 PM Adobe PageMaker 6.
SCREW DOWN CROWN DISPLAY AND CROWN/BUTTONS STOPWATCH minute hand [for models with screw down crown] STOPWATCH 1/5-second hand Unlocking the crown Minute hand Hour hand a 2 Crown can be pulled out. b Locking the crown c CROWN 1 Push Crown back in to normal position. English English A 1 Turn Crown counterclockwise until you no longer feel the threads turning. 2 Turn Crown clockwise while pressing it lightly until tight.
SETTING THE TIME AND ADJUSTING THE STOPWATCH HAND POSITION 1) MAIN TIME SETTING Hour hand Minute hand CROWN ● This watch is so designed that the following are all made with the crown at the second click position: * It is recommended that the hands be set to the time a few minutes ahead of the current time, taking into consideration the time required to adjust the STOPWATCH hand position . Once the crown is pulled out to the second click, be sure to check and adjust 1) and 2) at the same time.
▲ STOPWATCH 1/5-second hand A B Press for 2 seconds. * STOPWATCH minute hand turns a full circle. B ▲ CROWN * The hand moves quickly if button B is kept pressed. ▲ English * The hand moves quickly if button B is kept pressed. Press repeatedly to set STOPWATCH minute hand to the “0” position. A Push back in to normal position in accordance with a time signal. English B Press repeatedly to set STOPWATCH 1/5-second hand to the “0” position. ▲ A ▲ STOPWATCH minute hand Press for 2 seconds.
SETTING THE DATE ● Before setting the date, be sure to set the main time. CROWN 1 Pull out to first click. ● The stopwatch can measure up to 60 minutes in 1/5-second increments. ● After 60 minutes, it will start counting again from “0” repeatedly up to 12 hours. STOPWATCH minute hand STOPWATCH 1/5-second hand A Start / Stop / Restart 2 Turn clockwise until the desired date appears. ➠ 3 Push back in to normal position.
NOTES ON OPERATING THE WATCH Standard measurement A ▲ ▲ A SETTING THE TIME AND ADJUSTING THE STOPWATCH HAND POSITION RESET STOP START B A STOP B RESET Split time measurement SPLIT RELEASE Measurement of two competitors START 10 01_YM91A(E)001-016 FINISH TIME OF 1ST COMPETITOR A SETTING THE DATE B ● It is necessary to adjust the date at the end of February and 30-day months. ● Do not set the date between 9:00 p.m. and 1:00 a.m., as the date may not change properly.
BATTERY CHANGE 5 Battery life : Approx. 5 years Battery : SEIKO SR927SW ● If the stopwatch is used for more than 2 hours a day, the battery life may be less than the specified period. ● As the battery is inserted at the factory to check the function and performance of the watch, its actual life once in your possession may be less than the specified period. ● When the battery expires, be sure to replace it as soon as possible to prevent any malfunction.
TO PRESERVE THE QUALITY OF YOUR WATCH WATER RESISTANCE ● Water resistance (5 bar)* English 01_YM91A(E)001-016 Page 14-15 NOTE: Pressure in bar is a test pressure and should not be considered as corresponding to actual diving depth since swimming movement tends to increase the pressure at a given depth. Care should also be taken on diving into water. TEMPERATURES Your watch works with stable accuracy within a temperature range of 5° -5°C C and 35°C (41°F and 95° F).
S Your watch will be adversely affected by strong magnetism. Keep it away from close contact with magnetic objects. MAGNETISM N SHOCKS & VIBRATION CHEMICALS CARE OF CASE AND BRACELET To prevent possible rusting of the case and bracelet caused by dust, moisture and perspiration, wipe them periodically with a soft dry cloth. PERIODIC CHECK Page 16 If your watch has a protective film and/or a sticker on the case back, be sure to peel them off before using your watch.
