The Marathon clock is a radio-controlled, atomic timepiece designed for precision and convenience. It features automatic time and date setting, a perpetual calendar, and additional sensors for temperature and humidity monitoring. This guide provides detailed instructions for setup, maintenance, and troubleshooting to ensure optimal performance.

Product Overview
The Marathon clock is a radio-controlled atomic clock designed for accuracy and ease of use. It features a sleek, modern design with a large LCD display for clear visibility. The clock automatically sets the time and date, eliminating the need for manual adjustments. It also includes a perpetual calendar, temperature display, and humidity monitoring, making it a versatile addition to any room. The clock supports multiple time zones, allowing users to track time across different regions. With its automatic daylight saving time adjustment, it ensures accurate timekeeping year-round. The Marathon clock also offers a self-adjusting feature, syncing with the atomic clock signal in Colorado for precise time accuracy. Its user-friendly interface and comprehensive manual make it easy to navigate and customize settings. Whether for home, office, or outdoor use, the Marathon clock provides reliable performance and advanced functionality. This guide will walk you through setting up, maintaining, and troubleshooting your Marathon clock to ensure optimal functionality.

Display Features
The Marathon clock features a large, easy-to-read LCD display with extra-large digits for optimal visibility. The screen showcases the time, date, temperature, and humidity levels, providing a comprehensive view of essential information. The clock includes an automatic ambient light sensor, which adjusts the display brightness based on the surrounding light conditions, ensuring clarity in both bright and low-light environments. The temperature display can be set to show readings in either Celsius or Fahrenheit, catering to user preferences. Additionally, the clock includes a humidity monitoring system, which helps maintain indoor air quality awareness. The display also supports a 24-hour time format option, offering flexibility for users who prefer this format. With its sleek design and advanced display features, the Marathon clock is not only functional but also visually appealing, making it a great addition to any room. Its clear and intuitive interface ensures that all information is easily accessible and understandable.

Time Setting
The Marathon clock offers both automatic and manual time setting options, ensuring accurate timekeeping with minimal effort. The automatic feature synchronizes with an atomic clock, while the manual option allows for quick adjustments when needed.
Automatic Time Setting
The Marathon clock features an automatic time setting function that eliminates the need for manual adjustments. By synchronizing with the atomic clock in Colorado, it ensures precise timekeeping and updates automatically for daylight saving time. This feature is activated upon inserting the batteries, making it a convenient and reliable option for accurate time display. The clock also supports both 12-hour and 24-hour formats, catering to different user preferences. Additionally, it can monitor temperature and humidity, enhancing its functionality beyond timekeeping. The automatic setting is especially useful for maintaining accuracy without user intervention, making it ideal for those who value simplicity and reliability in their timekeeping devices.
Manual Time Setting
For situations where the automatic time setting is not feasible, the Marathon clock allows for manual time adjustments. To begin, press and hold the SET button for 2 seconds until the display flashes, indicating the time mode. Use the UP and DOWN buttons to adjust the hours and minutes. The clock will flash the digit being modified, allowing precise control. After setting the desired time, press the SET button to save the changes. This feature is particularly useful when the atomic signal is weak or unavailable. Additionally, the clock supports both 12-hour and 24-hour time formats, which can be selected during manual setup. The manual time setting ensures flexibility and accuracy, even without the automatic synchronization. This option is ideal for users who need to customize their clock settings or operate in areas with limited atomic signal coverage. The process is straightforward, ensuring that the clock remains accurate and functional in all conditions.

Time Zones
The Marathon clock supports multiple time zones, including Pacific, Mountain, Central, Eastern, Atlantic, Samoa, Hawaii, and Alaska. Users can easily switch between zones to display the correct local time, ensuring accuracy across different regions.
Available Time Zones
The Marathon clock offers a comprehensive selection of time zones to cater to various regions. These include Pacific Time (PT), Mountain Time (MT), Central Time (CT), Eastern Time (ET), Atlantic Time (AT), Samoa Time (ST), Hawaii Time (HT), and Alaska Time (AKT). This wide range ensures users can set their clock to match their specific geographic location or monitor time in different areas. Each time zone is clearly labeled and easily accessible through the clock’s intuitive interface, allowing for seamless transitions between zones. Whether you’re in the mainland United States or its territories, the Marathon clock provides accurate and reliable timekeeping. The availability of these zones makes the clock versatile for both personal and professional use, accommodating diverse needs and preferences. This feature is particularly useful for individuals who travel frequently or conduct business across multiple regions.
Setting Time Zones
To set the time zone on your Marathon clock, follow these straightforward steps. First, press the SET button once. The display will show SET TIME ZONE, and the current time zone will flash. Use the – button to scroll through the available time zones: Pacific, Mountain, Central, Eastern, Atlantic, Samoa, Hawaii, and Alaska. Once you reach your desired time zone, press the SET button again to confirm. The clock will automatically update to the selected time zone. For manual adjustments, ensure the clock is in time mode, then press and hold the SET key for 2 seconds. Use the UP or DOWN arrows to navigate through the zones. This feature ensures accurate timekeeping across different regions, making it ideal for travelers or those monitoring multiple time zones. The process is designed to be user-friendly, allowing quick and efficient adjustments as needed.
Alarms
The Marathon clock offers a convenient alarm feature to help you stay on schedule. To set an alarm, press and hold the ALARM button until the alarm time appears on the display. Use the UP or DOWN buttons to adjust the hour and minutes. Once set, the alarm will sound at the specified time. The clock also features a visual indicator, such as a flashing light or an alarm icon, to remind you when the alarm is active. For added flexibility, you can choose between multiple alarm tones and adjust the volume using the VOLUME button. The alarm function is designed to be user-friendly, ensuring you never miss important appointments or events. Additionally, the clock allows you to enable or disable the alarm with a single button press, making it easy to manage. This feature is particularly useful for those who need a reliable reminder system. The Marathon clockâs alarm system is both practical and customizable, catering to various user preferences.
Date and Calendar
The Marathon clock features a perpetual calendar that automatically adjusts for dates, months, and leap years. It synchronizes with atomic signals to ensure accurate date and time display, eliminating manual adjustments. The calendar function is seamless and reliable, providing clear date information at a glance.
Perpetual Calendar
The Marathon clock includes a perpetual calendar that automatically tracks dates, months, and years, including leap years, without manual input. This feature ensures accurate date display, synchronized with atomic time signals for reliability. The calendar updates seamlessly, providing clear and precise information. It eliminates the need for manual adjustments, making it a convenient and efficient feature for users. The perpetual calendar is part of the clock’s advanced functionality, which also includes temperature and humidity monitoring, enhancing its overall utility. This feature is especially useful for keeping track of important dates and events without the hassle of constant updates. The Marathon clock’s perpetual calendar is a testament to its innovative design and commitment to user convenience.
Daylight Saving Time (DST)
The Marathon clock automatically adjusts for Daylight Saving Time (DST), eliminating the need for manual time changes. This feature ensures the clock remains accurate during the transition periods in spring and fall. The clock recognizes the start and end dates of DST, which vary by region, and updates the time display accordingly. For example, in North America, DST typically begins on the second Sunday in March and ends on the first Sunday in November. The clock’s advanced functionality ensures a smooth transition, maintaining precise timekeeping without user intervention. Some models may require enabling DST mode manually, but most operate automatically once the correct time zone is set. This feature is particularly useful for users who want a hassle-free experience. The Marathon clock’s DST handling is part of its robust design, which includes automatic time setting, perpetual calendars, and temperature monitoring, making it a reliable and low-maintenance timepiece.

Additional Features
The Marathon clock includes temperature display and humidity monitoring, providing real-time environmental data. It also features an automatic night light and ambient light sensor for optimal visibility in various lighting conditions, enhancing user convenience and functionality.
Temperature Display
The Marathon clock features an integrated temperature sensor that provides accurate indoor temperature readings. The temperature is displayed in either Celsius or Fahrenheit, depending on the user’s preference. This feature is particularly useful for monitoring room conditions without needing a separate device. The temperature display updates in real-time, ensuring current and precise information. Users can easily switch between temperature units via the clock’s settings menu. Additionally, the clock’s large, clear digits make it easy to read the temperature from across the room. This functionality, combined with the clock’s other features like humidity monitoring, makes it a comprehensive tool for maintaining a comfortable indoor environment. The temperature display is a convenient addition that enhances the clock’s overall utility and user experience.
Humidity Monitoring
The Marathon clock includes a built-in humidity sensor that provides real-time indoor humidity levels. This feature is designed to help users monitor and maintain optimal indoor air quality. The humidity reading is displayed alongside the temperature, offering a comprehensive view of the environment. The sensor updates automatically, ensuring accurate and current data. Users can easily check the humidity levels at a glance, thanks to the clock’s large and clear display. This feature is especially useful for managing comfort in homes, offices, or any space where humidity levels are important. The humidity monitoring function complements the clock’s other advanced features, such as temperature display and perpetual calendar, making it a versatile and practical addition to any room. By keeping track of humidity, users can take proactive steps to maintain a healthy and comfortable indoor climate. This feature enhances the clock’s overall functionality, making it more than just a timekeeping device.
Maintenance
Regular maintenance ensures optimal performance of your Marathon clock. This includes battery replacement and cleaning the display to maintain clarity. Proper care extends the product’s lifespan and ensures accurate timekeeping and sensor functionality. Follow the manual’s guidelines for best results.
Battery Replacement
Replacing the batteries in your Marathon clock is a straightforward process that ensures continuous operation. Locate the battery compartment, usually found on the back of the clock. Open it by sliding or unscrewing, depending on the model. Remove the old batteries and insert new ones, matching the type specified in the manual (typically AA or AAA). Ensure the batteries are correctly oriented to maintain proper polarity. Close the compartment securely to avoid any gaps. After replacement, the clock may require a few minutes to reset and synchronize with the atomic signal. If the clock does not turn on, check the battery connections and ensure they are seated properly. Refer to the manual for specific instructions, as some models may have additional steps. Regular battery replacement prevents data loss and maintains accurate timekeeping and sensor functionality. Always use high-quality batteries to ensure optimal performance. Proper disposal of old batteries is recommended to protect the environment.
Cleaning the Clock
Regular cleaning ensures your Marathon clock remains in optimal condition. Start by turning off the clock to prevent accidental button presses during cleaning. Use a soft, dry cloth to gently wipe the display and exterior surfaces, removing dust and fingerprints. For tougher smudges, lightly dampen the cloth with water, but avoid excessive moisture to prevent damage. Never use harsh chemicals, abrasive cleaners, or rough materials, as they may scratch the display or harm the finish. For the sensors, such as temperature and humidity monitors, use a clean, dry cloth to avoid interference with their accuracy. Avoid spraying cleaning products directly on the clock or its components. If using a mild detergent, dilute it with water, dip a cloth, and wipe gently, ensuring no liquid seeps into the clock. Regular cleaning maintains clarity, functionality, and aesthetic appeal. Always refer to the manual for specific cleaning recommendations tailored to your Marathon clock model.
Troubleshooting
Common issues include incorrect time display, synchronization problems, or sensor malfunctions. Reset the clock by removing batteries for 30 seconds. Ensure proper time zone settings and check for obstructions affecting the atomic signal reception. Refer to the manual for detailed solutions.
Common Issues
Users may encounter several common issues with their Marathon clock, including incorrect time display, synchronization problems, or sensor malfunctions. One frequent issue is the clock not updating automatically, which can be resolved by ensuring it is placed away from obstructions and within range of the atomic signal. Another issue is the clock showing the wrong time zone, which can be corrected by manually setting the time zone as outlined in the manual. Additionally, temperature and humidity sensors may occasionally provide inaccurate readings, requiring recalibration or cleaning. If the clock fails to synchronize with the atomic signal, resetting the device by removing the batteries for 30 seconds often resolves the problem. For persistent issues, refer to the troubleshooting section of the manual or contact customer support for further assistance. Regular maintenance, such as cleaning the clock and ensuring proper battery installation, can also prevent many common problems. Always consult the user manual for specific solutions tailored to your Marathon clock model.
Resetting the Clock
Resetting your Marathon clock can resolve various operational issues. To reset, remove the batteries and press the SET button for 5 seconds to discharge any remaining power. Reinsert the batteries and wait for the clock to restart. If the clock still doesn’t function properly, press and hold the SET button for 10 seconds while the batteries are inserted. This will restore default settings. Note that resetting will erase all manual settings, requiring you to reconfigure time zones, alarms, and other features. For atomic models, resetting may also trigger a new synchronization with the atomic signal, which can take up to 24 hours. Always refer to the manual for specific reset procedures, as methods may vary slightly between models. Resetting should be a last resort, as it will require reconfiguration of all settings. If issues persist after resetting, contact customer support for further assistance. Regular resets are generally not needed, but they can be useful for troubleshooting persistent problems.

Conclusion
The Marathon clock is a versatile and reliable timekeeping solution, offering advanced features like atomic accuracy, automatic time setting, and additional functionalities such as temperature and humidity monitoring. Its user-friendly design ensures ease of operation, while the comprehensive manual provides detailed guidance for setup, maintenance, and troubleshooting. Whether you’re seeking precision timekeeping or added convenience, the Marathon clock delivers exceptional performance. By following the manual’s instructions, users can fully utilize its capabilities and enjoy a seamless experience. Regular maintenance, such as battery replacement and cleaning, ensures longevity and optimal functionality. With its robust design and intuitive controls, the Marathon clock is a practical and reliable addition to any home or office. For any issues, refer back to the manual or contact customer support for assistance. This clock is designed to meet all your timekeeping needs with accuracy and reliability.