AUTOMATIC AND QUARTZ

Chronograph

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ETA 251.272KhakiAviationQuartzChrono

22jewels

ETA 24-2JazzmasterSquareAutoChrono

37jewels

ETA 7753 JazzmasterAutoChrono

27jewels

ETA 7750KhakiFieldAutoChrono

25jewels

ETA 7750 KhakiTachymiler

25jewels

ETA 251.471KhakiAirQuartzChrono

23jewels

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Congratulations

Hamilton is delighted that you have chosen a time-piece from its collection. You have acquired a small technological marvel that will serve you faithfully for many years. The most advanced technologies were used throughout its manufacture and it un-derwent stringent controls before it was released for sale.

Characteristics

A Start/Stopbutton

B Buttonforresettingtozero

C Crownforadjustments

D Buttonforsettingdate

E Crownforadjustmentofinteriorrotatingbezel

y 60-secondcounter

x 30-minutecounter

c 12-hourcounter

1/10secondcounter

Smallsecondsdisplay

Date/Day

Telemeterortachometerscale

Interiorrotatingbezel

Care and maintenance

RecommendationsLikeallmicro-mechanicalprecisioninstruments,yourHamiltonwatchshouldbecheckedatleastonceeverytwoyears.EntrustyourwatchonlytoanauthorizedHamiltonagent.Tokeepyourwatchwater-resistant,makesurethatitssealingfeaturesaretestedateverycheck-up.Thewater-resistanceofyourwatchisindicatedonthecaseback.

Ex: 3ATM=30meters=100feet/5ATM=50meters=165feet/10ATM=100meters=330feet/20ATM=200meters=660feet(page78)

Five basic rules for maintaining the water-resistance of your watch 1. Haveyourwatchcheckedregularly.

2. Donotmovethecrownwhenyouareinwater.

3. Rinseoffyourwatchwithfreshwaterafteranyimmersioninseawater.

4. Dryyourwatchwheneveritgetswet.

5. Haveyourwatchcheckedforwater-resistancebyanauthorizedHamiltonagenteachtimethecaseisopened.

Automatic movement. The mechanism ofthe watch includes an oscillating rotor thatwindsthemainspringviathemotionofyourwrist.Thepowerreserve isapproximately42hours.Ifnecessary,thewatchmayberewoundmanually.Withmostofourmodels,thebeautyoftheinnerworkingofthewatchmovementcanbeadmiredthroughthetransparentcaseback.

Quartz movement.Theelectricalenergypro-videdbythebatterycausesthequartzintheinterior of the watch movement to oscillate32,768timespersecond.Thishighfrequencygives great accuracy.The seconds hand ad-vancesinsteps.

Adjustments

NB: Oncertainmodels thecrown is screweddownto guarantee optimal water-resistance. It must beunscrewedtomakeadjustments.Afteradjustmentsmakesureitisscreweddownagain.Pleasenotethatwater-resistanceisonlyguaranteedwhenthecrownisscreweddown.

Setting the time1. PulloutthecrownCcompletelytoposition(p2):

thesecondshandstops*.

2. Setthetimebyturningthecrowninthedesireddirection.

3. Pushthecrownbackincompletely:thesecondshandstartsagain,allowingperfectsynchronizationwithatimesignal.

*stopsecondsaccordingtomodel

Setting the date and the day 1. PulloutthecrownCtoposition(p1).

2. Turnthecrowncounterclockwiseuntilthedesireddateisdisplayedandclockwisetodisplaythedesiredday.

3. Pushthecrownbackincompletely.

NB: Avoidperformingthisoperationbetween8p.m.and2a.m.

Movement ETA 77531. PressbuttonDusinge.g.thetipofaballpoint

pen.

2. Thedatechangesateachpress.

NB: Adjustmentisnotpossiblebetween8.30p.m.and11.p.m.

Setting the time zone and the date

1. PulloutthecrowntoCtoposition(p1).

2. Turnthecrowntoadvancethehourhand.Thedatechangeseachtimethehandpasses12o’clockmidnight.

3. Pushthecrownbackincompletely.

Important: Donot leavethecrown inposition(p1)forlongerthan20minutes,asthismightinterferewiththetimefunction.

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Using the chronograph

Start-Stop functionTimingasingleevent:1. PressbuttonA:thechronographstarts.

2. PressbuttonA:thechronographstops.

3. PressbuttonBtoresettozero.

NB: Beforeyoustarttiming,thehandsshouldberesettozero.Ifnecessary,pressbuttonB.

Cumulative time functionThismeasuressuccessivetimes.Eachresultisaddedtothepreviousone.1. PressbuttonA:thechronographstarts.

2. PressbuttonAagain:thechronographstops.Repeatthesetwostepsasmanytimesasdesired.Attheendofthelastmeasurement,thechronographdisplaysthetotalofallthetimesmeasured.PressbuttonBtoresettozero.

Technical information

TelemeterScaleshowingthedistancetraveledbyasoundinacertaintime.Forexample,tomeasurethedistanceseparatingyoufromastorm,startthechronographwhenyouseelightningandstopitwhenyouheartheresultingthunder.Ameasurementof3secondsgivesadistanceof1kmonthetelemeterscale.

TachometerScaleshowingtheaveragespeedofavehicle.Usingthechronograph(Start/Stop)function,measurethetimetakentotravel1km.Theaveragespeedcanbereadonthetachometerscale.

Ex: 20seconds=180km/h

E.O.L. function (indicationoftheendofbatterylife)Ifthesecondshandstartstomovein4-secondsteps,thebatteryshouldbechangedbyyourHamiltonagent.

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Buckle adjustment

cxy

20 ATM

5 ATM

1 ATM 3 ATM

10 ATM

Water resistance example guide

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