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- Each press of S1 will select the digits to be adjusted. They will appear flashing. Press and hold S1 for rapid digit 
  advance. 
- With each press of S3, the next digits for setting can be selected. The sequence is as follows: 

 

S3

 

MINUTE SECOND

S3

 
 

 
- After all adjustments are completed, press S4 to exit the setting mode. 
- Press S1 to start or stop the timer.

 

- When the timer counts down to zero, additional time will count up automatically. “TOTAL” time (Countdown Time 

  

+ Additional Time) is displayed, when additional time is stopped by pressing S1. 

 

 

4

National Electronics & Watch Co., Ltd. and it may NOT be used,

National Electronics & Watch Co., Ltd.

copied or distributed except with authorization in writing from

The enclosed design is proprietary intellectual property owned by

 
 
 
 
 

- When the timer is stopped, press S2 to reload the last preset time. Continue to press S2 to select the 
  3 pre-determined countdown times including 10 minutes, 15 minutes and 45 minutes

Notes: 
1. The Sport CountdownTimer has 1-second resolution. The working range is from 1 second to 99 minutes 59 
    seconds for both the countdown time and the additional time. 
2. If the “TOTAL” time exceeds 99 minutes 59 seconds, the watch will display as follows:

 

S1 

TOTAL TIME 

PRESET TIME

ADDITIONAL 

     

 TIME

 

S1 

 
 
 
 
 

TOTAL TIME: 162 minutes 55 seconds

 

3. The SC-587 will sound 3 beeps at 3 minutes, 2 beeps at 2 minutes and 1 beep at 1 minute before the timer 

counts down to zero. Then it will beep for 5 seconds when the timer counts down to zero. Press any 
button (except S5) to silence the sound. 

4. When additional time is counting, an arrow pointing upwards is displayed. 
5. If there is no button operation for 2-3 minutes in setting mode, the watch will return back to Sport Timer mode 
    automatically.

 

 

(H) HOW TO USE CHRONOGRAPH 

 
 
 
 
 
 
 
 
 
 

- Press S3 to display the Chronograph mode. “Chron” will be displayed for 1 second. 

S4 

S5 

S3 

S1 

S2

- Press S1 to start the chronograph. “Run” will appear. 
- For the first hour, the chronograph shows minutes, seconds and 1/100-seconds. Then the chronograph shows 
  hours, minutes and seconds. 
- Press S2 to take a split and lap time. The split time and “SPL” will be displayed for 6 seconds, then the lap time 
  and “LAP” will be displayed for 6 seconds. Then the display will return to the current running time. Press 4 

  

for fast escape

.

 

- Press S2 again to take the next split and lap time.

 

- Press S1 to stop the chronograph. “STP” will be displayed. Then press S1 again to re-start the chronograph, 
  or press S2 to reset the chronograph back to all zeros. 
 
 
 
Remark:

 

The chronograph has 1/100-second resolution for the first hour and 1-second resolution after that, 
up to 99 hours 59 minutes 59.99 seconds, at which time the chronograph will stop automatically.

 

 

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