Timex M850, M640, M515, M579, M187, M185 Changing the battery, INDIGLO night-light, Water resistance

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C A R E & M A I N T E N A N C E

C A R E & M A I N T E N A N C E

Changing the battery

WARNING: CHANGING THE BATTERY YOURSELF MAY RESULT IN DAMAGE TO THE WATCH. TIMEX RECOMMENDS YOU HAVE A WATCH RETAILER OR JEWELER REPLACE THE BATTERY.

If you choose to replace the battery yourself, check the back of the Watch (caseback) for the specific battery type and size required for your Watch. Carefully follow the steps below:

1.Place the Watch face-down on a flat work surface.

2.Separate both halves of the Watch band or strap using a small flat screwdriver.

You must install the caseback in the same direction you removed it or the buzzer element will not function after reassembly.

3.Using a 00 Phillips-head screwdriver, remove the four screws that secure the caseback and set them aside. Carefully remove the caseback and set it aside.

WARNING: ALWAYS KEEP THE WATCH FACE DOWN ON YOUR WORK SURFACE. IF YOU TURN THE WATCH OVER TO REMOVE THE SCREWS OR CASEBACK YOU MAY LOSE THE SMALL ELECTRICAL CONNECTORS INSIDE THE WATCH.

4. Carefully open the battery clamp and remove the battery.

5.Place a new battery in the battery compartment, making sure the side with the + marking faces you.

6.Reattach the battery clamp.

7.Replace the caseback, making sure the black gasket sits firmly in the case groove and the caseback properly aligns with the Watch to ensure the buzzer will line up with the internal connections (see note after Step 2).

8.Carefully reattach the bands or straps so that the shorter piece with the buckle attaches to the upper set of lugs.

INDIGLO® night-light

Electroluminescent technology illuminates the entire Watch face at night and in low light conditions.

Water resistance

Your Watch withstands water pressure up to 86 psi (equals immersion to 164 feet or 50 meters below sea level). This 50-meter resistance remains intact so long as you keep the lens, push buttons, and case intact.

WARNING: TO MAINTAIN WATER RESISTANCE, DO NOT PRESS ANY BUTTONS WHILE UNDER WATER.

While your Watch will resist water, you should not use this Watch for diving, as it is not a diver’s Watch and you should rinse your Watch with fresh water after exposure to salt water. The Watch will not display Sensor data when operated under water.

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Contents w a t c h g u i d eu s e r r m a nPerformance Watch Overview TA B L E O F C O N T E N T SIntroduction Watch ModesWelcome I N T R O D U C T I O NWatch terminology Before you beginP E R F O R M A N C E WAT C H O V E R V I E W Print resources The chronographResources Web resourcesSetting buttons Watch buttonsDisplay icons Viewing buttonsStarting the Bodylink System Viewing Performance DataMessages Preparing to use your Watch Setting your Watch for first useDisplay formatting Determining your heart rateWAT C H M O D E S Time of Day Mode Setting the timeDate automatically sets the day of week when you set the date Time of Day Mode terminologyViewing performance data in Time of Day Mode Switching time zonesSynchronizing the Watch with the GPS-3D Sensor HOLD FOR TIMETime of Day Mode example Chronograph ModeTime of Day Mode tips & tricks Chronograph Mode terminologyOperating Chronograph Mode Viewing performance data in Chronograph ModeChronograph Mode example Vertical ModeChronograph Mode tips & tricks Vertical Mode terminologyViewing performance data in Vertical Mode Finish ModeVertical Mode example Finish Mode Terminology Setting Finish ModeOperating Finish Mode Viewing performance data in Finish Mode Finish Mode exampleInterval Mode terminology Interval Timer ModeSelecting an interval workout Operating Interval Timer Mode Setting up an interval workoutHeart rate target zones and alerts Interval Mode tips & tricks Viewing performance data in Interval Timer ModeInterval Mode example Lap Data Mode Viewing performance data in Lap Data ModeLap Data Mode example Summary ModeLap Data Mode tips & tricks Summary Mode terminologySpeed Viewing performance data in Summary ModeHeart Rate DistanceSummary Mode example Summary Mode tips & tricksTime Operating the timer Basic Timer ModeSetting the timer 4. The timer will stop after the alert if set to STOP ORBasic Timer Mode tips & tricks Alarm ModeBasic Timer Mode example Selecting an alarm Configure ModeSetting an alarm Operating Configure Mode HRM settingsS+D settings Hands-Free settings Altitude settingsWatch settings Unit settings Water resistance Changing the batteryINDIGLO night-light C A R E & M A I N T E N A N C EInternational warranty U.S. limited warranty L E G A L I N F O R M AT I O NProduct Name Speed + Distance System GPS Transceiver FCC Notice U.S. / IC Notice CanadaHeart Rate Monitor System HRM Transmitter Manufacturers Address 555 Christian Road Declaration of ConformityManufacturers Name Timex Corporation Product NameGeneric Immunity Standard EN 55024 Generic Emissions Standard ENSupplemental Information