HAMILTON Caliber 7750 Watch Instruction Manual

HAMILTON Caliber 7750 Watch:

Illustration keys

1.  Start-Stop button
2. Button for resetting to zero
3. Crown for adjustments
4.  Button for setting day or date
5.  Exterior rotating bezel*
6.  60-second counter
7. 30-minute counter
8. 12-hour counter
9.  1/10 of a second counter*
10.  Small seconds display
11. Date or day-date display
12.  Telemeter, tachymeter or tachymeter scale according to model

Introduction

Your HAMILTON watch is a micromechanical high precision instrument, developed and manufactured in Switzerland. Whether you wear your watch every day or only occasionally – your timepiece requires constant care. The following information will help you to preserve its precision and authenticity.

 Maintenance service:

Please note that as with any micromechanical precision instrument, HAMILTON watches require regular maintenance. This keeps your watch in perfect working order and makes it last longer. The frequency with which this maintenance workneeds to be carried out depends on the model, as well as climatic conditions and the owner’s care of the watch. Therefore we cannot give a specific time interval for servicing. We generally recommend that a complete maintenance service should be carried out every 3 to 5 years. To ensure that the service is carried out professionally, kindly take your watch to an authorized HAMILTON Service Center or official HAMILTON retailer.

Water resistance:

During the final check, HAMILTON watches are checked for water-resistance as marked on the back of the case, but the water-resistance of a watch is not permanent. The water resistance of a watch can be impaired by the natural aging process of the gaskets (case back gasket, crown gasket, crystal gasket etc.) or accidental knocks to the watch case. Additionally, external influences like perspiration, chlorine- or saltwater, ultraviolet rays and cosmetic products can compromise the sealing over time.
Therefore, always rinse your watch with clear water, when it comes in contact with chlorine- or saltwater.

Basic advice for safeguarding the water resistance of your watch:

The water resistance should be checked once a year by an authorized HAMILTON Service Center. Please ensure that the crown, according to the model, is pressed back into position 0, or screwed back carefully so that water cannot get into the mechanism. Do not use crown/push button functions underwater.

The water-resistance of your watch is marked on the back of the case:

Leather straps:

Please note that leather is a natural material subject to natural ageing. Depending on your wearing habit, the strap should be replaced regularly for reasons of safety (security of the watch on your wrist), as well as aesthetic and hygiene reasons. In normal, daily wearing conditions it has an average life of six to twelve months. To keep your leather strap in good condition for as long as possible, HAMILTON recommends the following:
• Protect your leather strap from heavy and long exposure to sunlight to prevent discoloration.
• Leather is permeable, contact with oily substances and cosmetics can damage it.
• To prevent deformation and fading of color, avoid contact with any kind of water.
• Clean your leather strap with a soft dry cloth, chemical substances can damage it.

Bathing in the sea and swimming pools:

Always rinse your watch with clear water after use in, or contact with salt or chlorine water.

Cleaning:

All HAMILTON watches can be cleaned with a soft, dry cloth periodically. Water resistant watch cases, bracelets and rubber straps can be cleaned by using a small brush (e.g. a toothbrush) and soapy water. Rinse it with clear water afterwards and use a soft cloth to dry it.

Chemical products:

Direct contact with solvents, detergents, perfumes, cosmetic products etc. can damage your strap/ bracelet and case. Further, such chemical liquids impair the function of the gaskets affecting the water-resistance of your watch.

Magnetic fields
Whenever possible keep your watch away from magnetic fields like speakers, electric devices, security gates at airports or other electromagnetic appliances. Such devices produce strong magnetic fields that may affect the functions of your watch, influence the accuracy of timekeeping or even completely stop it.

Temperatures
HAMILTON recommends not to expose your watch to extreme climatic changes (exposure to sunlight followed by immersion in cold water) or extreme temperatures over 60°C (140°F) or under than 0°C (32°F).

Batteries
Watch batteries can last from between two and five years, depending on the movement type and the amount of energy used by the various functions. If the second hand begins to jump in 4-second intervals, the battery needs to be changed (end of life indicator). We recommend that you take your watch to an authorized HAMILTON Service Center or official HAMILTON retailer as they have the necessary tools and testing equipment to carry out the work professionally and based on the HAMILTON standards. An empty battery must be changed as soon as possible to avoid the risk of leakage and resulting damage to the watch mechanism.

  Movement information:

The electrical energy provided by the battery causes the quartz in the interior of the watch movement to oscillate 32,768 times per second. This high frequency gives great accuracy. The seconds hand advances in steps.

Manual winding: The most traditional of movements in watch-making is the manually wound one. To en-sure that the watch does not stop, it must be wound regularly – once a day.

Automatic: The mechanism of the watch includes an oscillating rotor that winds the mainspring via the motion of your wrist. If necessary, the watch may be rewound manually.

5. Settings:

Standard settings for all watches:
Important: in order to guarantee the water resistance of your watch, always return the crown to its normal position (p0) after any adjustment has been made.

Setting the date and the day :

1.  Pull out the crown C to position (p1).
2.  Turn the crown clockwise or counterclockwise to set the date or the day.
3.  Push the crown back into position (p0).

according to model

Automatic chronograph and GMT watch:   Please abstain from correcting the date or the day between 8 p.m. and 2 a.m.
Setting the time:

1.  Pull out the crown C completely to position (p2): the seconds hand stops*.
2. Set the time by turning the crown in the desired direction.
3.  Push the crown back into position (p0): the seconds hand starts again, allowing perfect synchronization with a time signal.

• according to model
  Special Settings : Quartz chronograph Caliber 251.272  251.274  251.471  251.474

Setting the time zone and the date

1.  Pull out the crown C to position (p1).
2.  Turn the crown in the desired direction to set the hour hand. The hour hand moves forwards or backward in one-hour jumps. The date changes each time the hour hand passes 12 o’clock midnight.
3.  Push the crown back into position (p0).

Adjustment of the counter hands:
After a battery change or a violent shock, it is possible that one or more counter hands are no longer exactly at zero. If this is the case, proceed as follows to adjust them:
Caliber 251.274  251.474  G10.212

1. Pull out the crown C to position (p1).
2. Press button A to select the hand to be adjusted. The hand-selected will rotate 360°.
3. Press button B to move the selected hand forward.
4. Push the crown back into position (p0).

Caliber 251.272  251.471

1. Pull out the crown C to position (p1).

2. Press button B to set the 30-minute counterhand to zero.

3.  Pull out the crown C to position (p2).

4. Press button A to set the 60-second counterhand to zero.

5.  Press button B to set the 1/10 of a second counter hand to zero.

6.  Push the crown back into position (p0).
   Caliber G10.211

7. Pull out the crown C to position (p1).

8.  Press button A to set the 1/10 of a second counter hand to zero.

9. Press button B to set the 60-second counterhand to zero.

10. Pull out the crown C to position (p2).

11.  Press button A to set the 30-minute counter hand to zero.

12.  Push the crown back into position (p0).

Special Settings: Automatic chronograph Caliber 7753  H-31
Setting the date
Set the date by pressing button D. The date changes at each press. Please abstain from correcting the date between 8 p.m. and 2 a.m.
Special Settings: Automatic GMT
Caliber 2893-1  2893-2
Setting the date and the universal-hour indicator disc or the 24-hour hand (according to model)

1.  Pull out the crown C to position (p1).
2.  Turn the crown counterclockwise to set the date and clockwise to set the universal-hour indicator disk or the 24-hour hand.
3. Push the crown back in to position (p0)
4. Please abstain from correcting the date or the day between 8 p.m. and 2 a.m.

Caliber H-14
Adjustment of the caliber GMT ‘H-14’ requires a spe-cific procedure. Please follow the steps described below in order to synchronize GMT (24-hour clock) and the local date and time (12-hour clock).

1. Pull out the crown C to position (p2): the seconds hand will stop.
2. Turn the crown clockwise or counterclockwise to adjust the GMT hours and minutes.
3.  Push the crown back in to position (p1): the sec-onds hand will start again.
4.  Turn the crown clockwise or counterclockwise to adjust the local date and time (only the hours hand will move).
5.  Push the crown back in to position (p0).

6. Chronograph:

Using the chronograph function
Note: Before you start timing, the hands should be reset to zero. If necessary, press button B.
Notice: for quartz chronographs equipped with the caliber 251.274, 251.474 or G10.212.
In order to save battery energy, the 1/10 of a second counter hand will stop moving after one minute of timing. It will display the precise measured time once the chronograph is stopped.
Simple timing
Button A: Start
Button A: Stop

Read time
Button B: Reset to zero

**Timing with intermediate times***
This function is only available on quartz chrono-graphs. It allows the display and reading of multiple successive times measured from the same starting point. The time taken to read the amounts can be caught up without disturbing the measurement of total elapsed time.
Button A: Start
Button B: Intermediate stop

•  Read 1st intermediate time
• Button B : Restart with catch-up of elapsed time Button B: Intermediate stop Read 2nd intermediate time And so on… Finally, press button A to stop the timing and read the total time.
• Button B: Reset to zero
• NB: The maximum catch-up time is 30 minutes.
• Read 1st intermediate time Button B: Restart with catch-up of elapsed time Button B: Intermediate stop
• Read 2nd intermediate time And so on… Finally, press button A to stop the timing and read the total time.
• Button B: Reset to zero
• NB: The maximum catch-up time is 30 minutes.

7. Key Words

Screw-in crown
On certain models the crown C is screwed in to guar-antee optimal water- resistance. It must be unscrewed to make adjustments. After adjustments make sure it is screwed in again.
Please note that water-resistance is only guaranteed when the crown is screwed in.
Tachymeter or tachymiler
Scale showing the average speed of a vehicle. Using the chronograph Start-Stop function, measure the time taken to travel 1 km or 1 mile. The average speed can be read on the tachymeter or tachymiler scale. Example: 1 km or 1 mile traveled in 20 seconds = 180 km/h or 180 miles/h
EOL function
Indication of the end of battery life. If the seconds hand starts to move in 4-second steps, the battery should be changed.
Elapsed time on the exterior rotating bezel
Scale for measuring elapsed time.

1.  Turn the bezel E counterclockwise until the arrow points to the minutes hand.
2. The minutes hand will indicate the elapsed time on the graduated scale of the rotating bezel.

For further information, please visit the HAMILTON University: www.hamilton- uni.com

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