Sharp SPC968
Sharp 12-inch Glow-in-the-Dark Atomic Analog Wall Clock User Manual
Model: SPC968
Introduction
Thank you for choosing the Sharp 12-inch Glow-in-the-Dark Atomic Analog Wall Clock. This clock is designed for precise timekeeping, automatically synchronizing with the official U.S. atomic clock signal. Its glow-in-the-dark features ensure visibility day or night, making it a versatile addition to any room.

Image: The Sharp 12-inch Glow-in-the-Dark Atomic Analog Wall Clock with a black frame and luminous numbers and hands.
Safety Information
- Do not expose the clock to extreme temperatures or direct sunlight for prolonged periods, as this may affect its performance and the glow-in-the-dark feature.
- Use only the specified battery type (1 x AA battery). Ensure correct polarity during installation.
- Remove batteries if the clock will not be used for an extended period to prevent leakage.
- Keep out of reach of children.
Package Contents
- 1 x Sharp 12-inch Glow-in-the-Dark Atomic Analog Wall Clock
- User Manual (this document)
Setup
1. Battery Installation
- Locate the battery compartment on the back of the clock.
- Insert one (1) AA battery (not included), ensuring the correct positive (+) and negative (-) polarity.
- Once the battery is inserted, the clock hands will begin to move, typically setting to the 12 o'clock position as it prepares to search for the atomic signal.

Image: Rear view of the clock highlighting the battery compartment and time zone/DST switches.
2. Time Zone and Daylight Saving Time (DST) Selection
On the back of the clock, locate the time zone switch (P, M, C, E for Pacific, Mountain, Central, Eastern) and the DST switch (ON/OFF).
- Slide the time zone switch to your current time zone.
- Set the DST switch to ON if your region observes Daylight Saving Time, or OFF if it does not.

Image: A diagram illustrating the US time zones and the WWVB atomic clock signal broadcast range from Fort Collins, Colorado.
3. Atomic Signal Reception
The clock will automatically attempt to receive the WWVB radio signal from Fort Collins, Colorado. This signal ensures the clock is accurate to within one second and adjusts for Daylight Saving Time.
- For optimal signal reception, place the clock near a window, away from large metal objects or electronic devices that may cause interference.
- The ideal time for initial setup and signal reception is in the evening, as signal strength is often better overnight.
- The clock may take a few nights to successfully receive and synchronize with the signal. Be patient.
Video: An instructional video from The Clock Shop - Sharp, detailing the setup process and atomic clock functionality for the SPC968 family of clocks.
Operating Instructions
Glow-in-the-Dark Feature
The clock features luminous numbers and hands that glow in the dark for easy visibility at night. For best results:
- Upon first use, expose the clock to sunlight or bright artificial light for 24-48 hours to "charge" the luminous material.
- Regular exposure to light during the day will ensure optimum glow performance at night.

Image: The Sharp Atomic Clock displaying its glow-in-the-dark feature in a dimly lit environment.
Maintenance
Cleaning
Wipe the clock with a soft, dry cloth. Do not use abrasive cleaners or chemicals, as they may damage the finish or the luminous material.
Battery Replacement
When the clock hands stop moving or the time becomes inaccurate, it's time to replace the AA battery. Follow the battery installation steps in the Setup section.
Troubleshooting
| Problem | Solution |
|---|---|
| Clock does not set to correct time. |
|
| Glow-in-the-dark feature is dim or not working. | Ensure the clock is exposed to sufficient light during the day to charge the luminous material. Initial charging may take 24-48 hours. |
| Clock is not moving or is slow. | Replace the AA battery with a fresh one. |
Video: An overview video from The Clock Shop - Sharp, providing general information and troubleshooting tips for Sharp Atomic Clocks.
Specifications
| Feature | Detail |
|---|---|
| Brand | Sharp |
| Model | SPC968 (Approximate, based on video reference) |
| Color | Black/Glow in Dark |
| Display Type | Analog |
| Special Feature | Atomic, Glow in the Dark |
| Product Dimensions | 12"W x 12"H |
| Power Source | Battery Powered (1 x AA battery, not included) |
| Material Type | Plastic |
| Operation Mode | Atomic |
Warranty and Support
For warranty information and customer support, please refer to the documentation included with your product or visit the official Sharp website. Keep your purchase receipt for warranty claims.
For additional assistance, you may contact Sharp customer service or the retailer from whom you purchased the product.
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