Introduction
Thank you for choosing the Marathon Compact Alarm Clock. This clock is designed for convenience and readability, making it ideal for your desk or nightstand. It features a large display, a cool blue backlight, and functions including time, temperature, and calendar display. This manual provides detailed instructions for setup, operation, and maintenance to ensure optimal performance of your device.

Figure 1: Front view of the Marathon Compact Alarm Clock showing its digital display with time, temperature, and date.

Figure 2: The compact alarm clock positioned on a nightstand, illustrating its small footprint and suitability for bedside use.
Package Contents
Please verify that all items are present in the package:
- Marathon Compact Alarm Clock
- 2 x AAA Batteries

Figure 3: The retail packaging of the Marathon Compact Alarm Clock, indicating included batteries.
Setup
Battery Installation
- Locate the battery compartment cover on the back of the clock.
- Slide the cover downwards to open the compartment.
- Insert two (2) AAA batteries, ensuring the correct polarity (+ and -) as indicated inside the compartment.
- Replace the battery compartment cover by sliding it upwards until it clicks into place.
Upon successful battery installation, the clock display will activate.
Operating Instructions
The clock features several buttons on the back for easy adjustment. Refer to Figure 4 for button locations.

Figure 4: Rear view of the clock highlighting its easy-to-use controls and multilingual display capabilities.
Setting Time and Date
- Press and hold the SET button (location may vary, typically on the back) until the display flashes, indicating setup mode.
- Use the UP or DOWN buttons to adjust the flashing value (e.g., hour, minute, year, month, day).
- Press the SET button again to confirm the setting and move to the next adjustable item.
- Repeat steps 2 and 3 until all time and date settings are complete.
- The clock will automatically exit setup mode if no buttons are pressed for a few seconds.
Selecting 12/24 Hour Format
While in normal time display mode, press the UP button to toggle between 12-hour (with AM/PM indicator) and 24-hour formats.
Setting Day of the Week Language
The clock supports day of the week display in English, Danish, Dutch, French, German, Italian, and Spanish. This setting is typically adjusted within the time/date setup sequence or via a dedicated language button.
Selecting Temperature Unit (°C/°F)
While in normal time display mode, press the DOWN button to switch between Celsius (°C) and Fahrenheit (°F) temperature units.

Figure 5: Detailed view of the clock's dynamic display, showing time, calendar information, and temperature readings.
Setting the Alarm
- Press the ALARM button (or a button marked with an alarm icon) once to display the current alarm time.
- Press and hold the ALARM button until the alarm time flashes.
- Use the UP or DOWN buttons to adjust the alarm hour and minute.
- Press the ALARM button again to confirm and exit alarm setting mode.
- To activate or deactivate the alarm, press the ALARM ON/OFF button (or the ALARM button briefly) until the alarm icon appears or disappears on the display.
The alarm features a progressive interval ring, starting softly and gradually increasing in volume.
Using the Backlight
To activate the cool blue backlight, simply press the large button located on the top of the clock. The backlight will illuminate for approximately five seconds, providing clear visibility in low-light conditions without being overly harsh on the eyes.
Features Details
Compact and Lightweight Design
Measuring approximately 3.1 x 1 x 3 inches (L x W x H) and weighing just 0.25 pounds, this clock is designed for portability and minimal space occupation. Its compact size makes it an excellent choice for travel or small nightstands.

Figure 6: Dimensions of the Marathon Compact Alarm Clock, illustrating its small and square form factor.

Figure 7: The clock placed on a bedside table, demonstrating its lightweight and compact nature within a typical bedroom environment.
Informative Display
The large, easy-to-read digital display provides the following information at a glance:
- Current Time (12-hour or 24-hour format)
- Temperature (Celsius or Fahrenheit)
- Month, Date, and Day of the Week (in selected language)
Color Variants
The Marathon Compact Alarm Clock is available in a variety of colors to suit different preferences and decor styles.

Figure 8: A selection of the Marathon Compact Alarm Clock in different available colors.
Specifications
| Item Weight | 113 Grams |
| Dimensions (L x W x H) | Approx. 3.1 x 1 x 3 inches (7.9 x 2.5 x 7.6 cm) |
| Finish Type | Plastic |
| Display Type | Digital |
| Power Source | 2 x AAA Batteries (Included) |
| Special Features | Alarm, Temperature Display, Date Display, Backlight |
| Manufacturer | MARATHON |
Maintenance
Cleaning
To clean the clock, gently wipe the surface with a soft, dry cloth. Do not use abrasive cleaners, solvents, or chemical sprays, as these may damage the finish or internal components. Avoid exposing the clock to excessive moisture.
Battery Replacement
When the display dims or the clock functions become erratic, it is time to replace the batteries. Follow the "Battery Installation" steps in the Setup section to replace the two AAA batteries. Always dispose of used batteries responsibly according to local regulations.
Troubleshooting
| Problem | Solution |
|---|---|
| Display is blank or dim. | Check if batteries are inserted correctly. Replace with fresh AAA batteries. |
| Alarm does not sound. | Ensure the alarm is activated (alarm icon visible on display). Verify the alarm time is set correctly. |
| Time/Date is incorrect. | Follow the "Setting Time and Date" instructions to reset the clock. Ensure you confirm each setting. |
| Backlight is too bright. | The backlight is designed for maximum illumination in dark environments and activates for a short duration. It cannot be dimmed. |
| Difficulty programming the clock. | Ensure you are pressing and holding the correct buttons as instructed. If an error occurs, removing and reinserting batteries can reset the clock to default settings, allowing you to start the setup process again. |
Warranty and Support
Warranty Information
This Marathon Compact Alarm Clock comes with a 2-year warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use. It does not cover damage caused by misuse, accidents, unauthorized modifications, or normal wear and tear.
Customer Support
For technical assistance, warranty claims, or further inquiries, please contact Marathon customer support. Refer to the official Marathon website or product packaging for the most current contact information.

Figure 9: Information about Marathon's history and legacy in manufacturing precision timing instruments since 1939.





