1. Introduction
Thank you for choosing the MARATHON Projection Clock Model CL030086BK. This manual provides detailed instructions for setting up, operating, and maintaining your new projection clock. Please read this manual thoroughly before use and retain it for future reference.
2. Safety Information
- Do not expose the device to extreme temperatures, direct sunlight, or high humidity.
- Avoid dropping or subjecting the clock to strong impacts.
- Do not attempt to disassemble or modify the clock. This will void the warranty.
- Use only the specified power source (USB 5V) and recommended AAA batteries.
- Keep out of reach of children.
3. Package Contents
Please check the package contents to ensure all items are present:
- 1 x MARATHON Projection Clock Unit (Model CL030086BK)
- 1 x USB Power Cable
- 3 x AAA Batteries
- 1 x User Manual (this document)
4. Product Overview
Familiarize yourself with the main components and controls of your projection clock.

Figure 4.1: Front View of the Projection Clock. This image displays the clock's front panel, featuring a large, clear digital display that shows the current time, day of the week, date, and indoor temperature. The display is designed for easy readability.

Figure 4.2: Back View of the Projection Clock. This image illustrates the rear of the clock, highlighting the battery compartment for three AAA batteries, the USB power input port, and various control buttons for setting time, alarm, and other functions. The product label with model number and contact information is also visible.
4.1 Front Panel Features
- Large LCD Display: Shows time (12/24 hour), date, day of the week, and indoor temperature (°C/°F).
- Projection Lens: Projects the time onto a wall or ceiling.
- SNOOZE/LIGHT Button: Activates snooze function for alarms and temporarily illuminates the display backlight.
4.2 Back Panel Features
- Battery Compartment: Holds 3 x AAA batteries for backup power.
- USB Power Input: Connects to the included USB cable for continuous power and projection.
- TIME SET Button: Used to enter time setting mode.
- ALARM SET Button: Used to enter alarm setting mode.
- +/– Buttons: Adjust values during setting modes.
- PROJECTION ON/OFF/ROTATE Button: Controls the projection feature and its orientation.
- °C/°F Button: Toggles between Celsius and Fahrenheit temperature display.
- RESET Button: Resets the clock to factory defaults.
5. Setup
5.1 Powering the Clock
- Insert Batteries: Open the battery compartment cover on the back of the clock. Insert 3 new AAA batteries, ensuring correct polarity (+ and -). The batteries provide backup power and allow basic display functions without USB power.
- Connect USB Power: Connect the small end of the provided USB cable to the USB power input port on the back of the clock. Connect the larger end to a USB power adapter (not included) or a powered USB port. The USB connection is required for continuous display backlight and projection functionality.
5.2 Initial Time and Date Setting
- Enter Time Setting Mode: Press and hold the TIME SET button for approximately 3 seconds. The hour digit will begin to flash.
- Set Hour: Use the + or – buttons to adjust the hour. Press TIME SET to confirm and move to the minute setting.
- Set Minute: Use the + or – buttons to adjust the minute. Press TIME SET to confirm and move to the 12/24 hour format setting.
- Set 12/24 Hour Format: Use the + or – buttons to select either 12-hour (with AM/PM indicator) or 24-hour format. Press TIME SET to confirm and move to the year setting.
- Set Year: Use the + or – buttons to adjust the year. Press TIME SET to confirm and move to the month setting.
- Set Month: Use the + or – buttons to adjust the month. Press TIME SET to confirm and move to the day setting.
- Set Day: Use the + or – buttons to adjust the day. Press TIME SET to confirm and exit time/date setting mode.
6. Operating Instructions
6.1 Setting the Alarm
- Enter Alarm Setting Mode: Press and hold the ALARM SET button for approximately 3 seconds. The alarm hour digit will begin to flash.
- Set Alarm Hour: Use the + or – buttons to adjust the alarm hour. Press ALARM SET to confirm.
- Set Alarm Minute: Use the + or – buttons to adjust the alarm minute. Press ALARM SET to confirm and exit alarm setting mode.
- Activate/Deactivate Alarm: Briefly press the ALARM SET button to toggle the alarm ON or OFF. An alarm icon will appear on the display when the alarm is active.
6.2 Using the Projection Feature

Figure 6.1: Projection Feature in Use. This image demonstrates the clock's projection capability, showing the digital time clearly projected onto a surface, such as a wall or ceiling, for easy viewing in low light conditions.
- Turn Projection On/Off: Press the PROJECTION ON/OFF/ROTATE button once to turn the projection on or off. The projection is only active when the clock is powered via USB.
- Rotate Projection: While the projection is active, repeatedly press the PROJECTION ON/OFF/ROTATE button to rotate the projected image in 90-degree increments. This allows you to adjust the orientation for optimal viewing on a wall or ceiling.
- Adjust Focus: (If applicable, check your specific model for a focus wheel near the projection lens) Rotate the focus wheel to sharpen the projected image.
6.3 Display Backlight
- When powered by USB, the display backlight will be continuously on.
- When powered by batteries only, press the SNOOZE/LIGHT button to temporarily illuminate the display for a few seconds.
6.4 Snooze Function
- When the alarm sounds, press the SNOOZE/LIGHT button to activate the snooze function. The alarm will pause for a set period (e.g., 5-10 minutes) and then sound again.
- To stop the alarm completely, press any other button (e.g., ALARM SET or TIME SET).
6.5 Temperature Display
- The clock displays the indoor temperature.
- Press the °C/°F button on the back of the clock to switch between Celsius and Fahrenheit units.
7. Maintenance
7.1 Cleaning
- Wipe the clock's surface with a soft, dry cloth.
- Do not use abrasive cleaners, solvents, or chemical sprays, as these may damage the finish or internal components.
7.2 Battery Replacement
- When the display becomes dim or functions are intermittent while running on battery power, it is time to replace the AAA batteries.
- Open the battery compartment cover on the back, remove the old batteries, and insert 3 new AAA batteries, observing correct polarity.
- Dispose of old batteries responsibly according to local regulations.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Display is blank or dim | No power or low batteries. | Ensure USB power cable is connected, or replace AAA batteries. |
| Projection is not working | Not connected to USB power; projection turned off. | Connect USB power. Press the PROJECTION ON/OFF/ROTATE button to activate. |
| Incorrect time or date | Time/date not set correctly; power interruption. | Re-set the time and date following Section 5.2. If issues persist, press the RESET button and re-set. |
| Alarm does not sound | Alarm is deactivated; alarm time not set correctly. | Ensure the alarm icon is visible on the display. Verify alarm time settings in Section 6.1. |
| Projection is blurry | Focus not adjusted. | Adjust the focus wheel near the projection lens (if available on your model). |
9. Specifications
- Brand: MARATHON
- Model: CL030086BK
- Color: Black
- Display Type: Large LCD Digital Display
- Product Dimensions: 5.7"W x 3.4"H (14.5 cm x 8.6 cm)
- Power Source: 3 x AAA Batteries (for backup), USB (Corded Electric)
- Material: Plastic
- Indoor/Outdoor Usage: Indoor
- UPC: 0063442388808
10. Warranty and Support
MARATHON products are manufactured to the highest quality standards. For warranty information, product support, or technical assistance, please contact us using the details below:
- Website: www.MarathonWatch.com
- USA / Canada Support: 1-800-822-4329
- International Support: 1-905-764-9420
Please have your model number (CL030086BK) and purchase information ready when contacting support.





