Brellum Swiss Watchmaking

A. DISPLAY

Watch Hands and Indicators

This section details the components visible on the Brellum chronograph watch face.

Description of the watch face diagram: The main dial features hour and minute hands. Several sub-dials are present: a 30-minute counter at the top left, a 12-hour counter at the bottom left, and a 60-second counter at the bottom right. Indicators include a day indicator on the top left sub-dial, a month indicator on the top right sub-dial, a 24-hour hand, a date hand pointing to the date on the main dial's periphery, and a moon phase indicator in a circular window, typically at the bottom. Push-buttons A, B, and C are located on the side of the watch case. The setting crown is at the 3 o'clock position and has three positions: I, II, and III.

Key Components:

• Hour hand
• Minute hand
• Second hand
• 30 minutes counter
• 12 hours counter
• 60 seconds counter
• Day indicator
• Month indicator
• 24 h hand
• Date hand
• Moon phase indicator
• Push-button A
• Push-button B
• Push-button C
• Setting crown (Position I, II, III)

Self-Winding

The watch is self-winding, meaning it is powered by the natural movements of the wearer's wrist.

A. SETTINGS

Crown 3 Positions

This section explains the functions of the setting crown in its three positions.

• Position I: Normal running of the watch and hand-winding.
• Position II: Setting the time. Also used for rapid correction of the date and month.
• Position III: Setting the date and day.

Important Notes on Corrections

• Date correction is not recommended between 10 p.m. and 2 p.m.
• Quick correction of the day is possible.
• Day correction is not possible between 9:30 p.m. and 12 o'clock midnight.
• The moon phase cannot be corrected between 3 a.m. and 4 a.m.

B. TIMING MODE - Simple Timing Function

This section describes how to use the chronograph for a simple timing function.

Description of the timing diagram: A watch face is shown with push-buttons A and B. Text indicates operations: START (1) via Push-button A, STOP (2) via Push-button A, and RESET (3) via Push-button B. Read time is indicated by elapsed hours, minutes, and seconds on sub-dials. The setting crown is shown in position I.

• START (1): Press Push-button A.
• STOP (2): Press Push-button A again to stop the timing.
• Read Time: The elapsed time is displayed on the sub-dials (e.g., -4 hours, -10 minutes, -18 seconds).
• Reset (3): Press Push-button B to reset the chronograph hands to zero.

Note: Setting crown should be in position I for these operations.

C. TIMING MODE - ADD Function

This section explains the 'ADD function' of the chronograph, which allows for cumulative timing.

Description of the timing diagram: Similar to section B, a watch face with push-buttons A and B is shown. Operations are labeled: START (1) via Push-button A, STOP (2) via Push-button A, and RESET (3) via Push-button B. The setting crown is in position I.

• START (1): Press Push-button A to begin timing.
• STOP (2): Press Push-button A again to halt the timer.
• Read Time: The elapsed time is shown on the chronograph sub-dials.
• Reset (3): Press Push-button B to return the chronograph hands to zero.

Note: Setting crown should be in position I for these operations.

D. Chronograph Operation Sequence

This section illustrates a sequence of chronograph operations, demonstrating how to start, stop, restart, and reset the timing function.

Description of the sequence diagram: A linear path shows numbered steps from 1 to 6, representing a sequence of chronograph actions. Each step is accompanied by a small icon resembling a pulse or heartbeat. The steps are: 1 START, 2 STOP Read, 3 RESTART, 4 STOP Read, 5 RESTART, 6 STOP Read. The diagram also shows a separate action: 'X Reset to zero', performed by Push-button B when the setting crown is in position I.

• 1 START: Begin timing.
• 2 STOP Read: Stop the chronograph and read the elapsed time. [timing icon]
• 3 RESTART: Resume timing from the stopped point. [timing icon]
• 4 STOP Read: Stop the chronograph again and read the elapsed time. [timing icon]
• 5 RESTART: Resume timing. [timing icon]
• 6 STOP Read: Final stop and read of the elapsed time. [timing icon]

Reset: [reset symbol] Reset to zero is performed by Push-button B when the setting crown is in position I.