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Cal. 5020.B

English
User’s Manual

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Description of the display and control buttons

Display elements

Minute hand

Hour hand

Minute counter

Hour counter

Centre stop-second

Second hand

Date

Control buttons

Push-button A

Crown

Push-button B

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Chronograph: Basic function

(Start / Stop / Reset)

Example:

 

Start:

 Press push-button

 A

.

   

Stop:

 to stop the timing, press 

pushbutton A once more and read 
the 3 chronograph counters:

 

4h / 20 min / 38 sec

 

Zero positioning: 

 Press 

push-button 

B

 

 (The 3 chronograph hands will be reset to 
their zero positions).

Push-button A

Push-button B

Minute counter

Hour counter

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Chronograph:
Accumulated timing

Example:

 

Start:

 (start 

timing)

 

Stop: 

(e.g. 

15

 min    

5

 sec following 

)

 

Restart:

 (timing is resumed)

Stop:

 (e.g. 

10

  min      

sec following 

)

  

 

      = 

25 min  10 sec

 

 

(The accumulated measured time is shown)

 

Reset: 

 

 

 The three chronograph hands are returned 
to their zero positions.

Push-button A

Push-button B

Minute counter

Hour counter

Please note:

*   Following 

, the accumulation of the 

timing can be continued by pressing 

push-button A

  

(Restart / Stop, Restart / Stop, …)

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Push-button B

Minute counter

Push-button A

Push-button B

Chronograph:
Intermediate or interval timing

Example:

 

Start: 

(start timing)

 

Display interval:

 

 e.g. 

10 minutes 10 seconds

 (timing 

continues in the background)

 

Making up the measured time:

 

 (the 3 chronograph hands are quickly 
advanced to the ongoing measured time).

 

Stop:

 (Final time is displayed)

 

Reset:

 

 

 

 The 3 chronograph hands are returned to 
their zero position

Please note:

 *  Following 

, further intervals or inter-

mediates can be displayed by pressing 

push-button B

 

(display interval / make up 

measured time, ...)

*

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III

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I

II

III

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Center stop-second

Push-button B

Minute counter

Hour counter

Push-button A

Adjusting the chronograph 
hands to zero position

Example: 
One or several chronograph hands are not 
in their correct zero positions and have to be 
adjusted (e.g. following a battery change).

   Pull out the crown to position 

III

 (all 3 

chronograph hands are in their correct or 
incorrect zero position).

   Keep push-buttons 

A and B

 depressed 

simultaneously 

for at least 2 seconds (the 

centre stop-second rotates by 
360° 

 corrective mode is activated).

Adjusting the centre stop second

Single step 

 

A

 

1 x short

Continuous  

 

A

 

long

Adjusting the next hand  B

 

 

Adjusting the minute counter hand 
and the hour counter hand

(mechanical coupled)

Single step 

 

A

 

1 x short

Continuous  

 

A

 

long

A

B

A

III

I

II

  Returning the crown to position 

I

 

 Termination of the chronograph hands 
adjustment  (can be carried out at any time).

I

II

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0

I

II

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1 7

Setting the date/time  

Example:
– Date / time on the watch: 

17

 / 1:25 AM

– Present date / time: 

4

 / 8:30 PM

  Pull out the crown to position

 II 

 

(the watch continues to run).

  Turn the crown until yesterday’s date 

 appears 

3

Crown

Date

*  Pull out the crown to position

 III 

 

(the watch stops).

 

  Turn the crown until the correct date

 

 

4

 appears.

** Continue to turn the crown until the 

 

correct time 8:30 PM appears.

  Push the crown back into position 

I

.

I

II

III

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0

I

II

III

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0

Second hand

Please note:

*  

To set your watch to the exact second, 
please refer to the chapter entitled «set-
ting the time».

**  Please observe the AM/PM clock rhythm.


Setting the time

*

 

Pull out the crown to position

 III 

 

(the watch stops).

  Turn the crown until you reach the correct

 time 

8:45

.

* Push the crown back into position 

I

.

I

II

III

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Please note:

*  In order to set the time to the exact second, 

 must be pulled out when the second 

hand is in position «60» (I). 
Once the hour and minute hands have been 
set, 

 must be pushed back into position 

I

 

at the exact second.

Second hand

I

II

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1

0

Setting the date (quick mode)

   Pull out the crown to position 

II

 (the watch 

continues to run).

   Turn the crown until the correct  

date 

1

 appears.

  Push the crown back into position 

I

.

I

II

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Please note:

During the date changing phase between 
9 PM and 12 PM; the date must be set to the 
date of the following day.

An extreme acceleration in setting the date 
with quick mode can induce a false date indi-
cation. The synchronization is re-established 
by setting the date from 01 till 31 (crown in 
position II).

RONDA AG 
CH-4415 Lausen/Switzerland

www.ronda-startech.com

11

 / 20

06

Battery type: 395 (diameter 9.5mm x 2.6mm / SR 927 SW)
Accuracy: +20 / -10 seconds per month

In case your watch needs to be repaired or to raise claims 
under a guarantee, please contact the point of sales

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