Changing the Configuration SettingsYou can modify all of the settings you configured in the initialsetup.1 Select > System > Device Reset > Initial Setup.2 Follow the on-screen instructions.Time ZonesEach time you turn on the device and acquire satellites, thedevice automatically detects your time zone and the currenttime of day.Device InformationSpecificationsEdge SpecificationsBattery type Rechargable, built-in lithium-ion batteryBattery life 15 hours, typical usageOperating temperature range From -20º to 60ºC (from -4º to 140ºF)Charging temperature range From 0º to 40ºC (from 32º to 104ºF)Water rating IEC 60529 IPX7**The device withstands incidental exposure to water of up to1 meter for up to 30 minutes.Heart Rate Monitor SpecificationsBattery type User-replaceable CR2032, 3 voltsBattery life Up to 4.5 years (1 hour per day)Operating temperaturerangeFrom -5° to 50°C (from 23° to 122°F)Radio frequency/protocol2.4 GHz ANT+ wireless communicationsprotocolWater rating 3 ATM*NOTE: This product does not transmit heartrate data while swimming.*The device withstands pressure equivalent to a depth of30 meters.Speed Sensor and Cadence Sensor SpecificationsBattery type User-replaceable CR2032, 3 voltsBattery life Approximately 12 months (1 hour per day)Operating temperaturerangeFrom -20º to 60ºC (from -4º to 140ºF)Radio frequency/protocol 2.4 GHz ANT+ wireless communicationsprotocolWater rating 1 ATM**The device withstands pressure equivalent to a depth of10 meters.Device CareNOTICEDo not store the device where prolonged exposure to extremetemperatures can occur, because it can cause permanentdamage.Never use a hard or sharp object to operate the touch screen,or damage may result.Avoid chemical cleaners and solvents that can damage plasticcomponents.Secure the weather cap tightly to prevent damage to the USBport.Cleaning the Device1 Wipe the device using a cloth dampened with a milddetergent solution.2 Wipe it dry.Caring for the Heart Rate MonitorNOTICEYou must unsnap and remove the module before cleaning thestrap.A build up of sweat and salt on the strap can decrease theability of the heart rate monitor to report accurate data.• Go to www.garmin.com/HRMcare for detailed washinginstructions.• Rinse the strap after every use.• Machine wash the strap after every seven uses.• Do not put the strap in a dryer.• When drying the strap, hang it up or lay it flat.• To prolong the life of your heart rate monitor, unsnap themodule when not in use.User Replaceable BatteriesWARNINGDo not use a sharp object to remove batteries.Keep the battery away from children.Never put batteries in mouth. If swallowed, contact yourphysician or local poison control center.Replaceable coin cell batteries may contain perchloratematerial. Special handling may apply. Seewww.dtsc.ca.gov.hazardouswaste/perchlorate.CAUTIONContact your local waste disposal department to properlyrecycle the batteries.Replacing the Heart Rate Monitor Battery1 Use a small Phillips screwdriver to remove the four screwson the back of the module.2 Remove the cover and battery.3 Wait 30 seconds.4 Insert the new battery with the positive side facing up.NOTE: Do not damage or lose the O-ring gasket.5 Replace the back cover and the four screws.NOTE: Do not overtighten.After you replace the heart rate monitor battery, you may needto pair it with the device again.Replacing the Speed Sensor or Cadence SensorBatteryThe LED flashes red to indicate a low battery level after tworevolutions.1 Locate the circular battery cover À on the back of thesensor.14 Device Information