1. Product Overview
The Sharp Pillow Personal Alarm Clock, Model 42311546, is a versatile and portable alarm solution designed to wake users through vibration, an audible beep, or a combination of both. Its compact design allows for placement on a nightstand or discreetly under a pillow, making it ideal for both home and travel use. This device operates on batteries, ensuring functionality without reliance on power outlets.

Image 1: The Sharp Pillow Personal Alarm Clock in use, positioned under a pillow for silent, vibrating wake-up.
2. Setup
2.1 Battery Installation
The alarm clock requires 3 AAA batteries (not included) for operation. For optimal performance, use new batteries.
- Locate the battery compartment cover on the back of the unit.
- Slide or lift the cover to open the compartment.
- Insert 3 AAA batteries, ensuring correct polarity (+ and -) as indicated inside the compartment.
- Replace the battery compartment cover securely.
2.2 Initial Power On
Once batteries are installed, the clock should power on automatically. If not, check battery placement or refer to the operating instructions for the power switch.
3. Operating Instructions
3.1 Setting Current Time
Use the designated buttons (often labeled 'HR' for hour and 'MIN' for minute, or similar time-setting controls) to adjust the current time displayed on the LCD screen.
3.2 Setting Alarm Time
Locate the 'AL. TIME' or alarm setting button. Press it to enter alarm setting mode, then use the hour and minute adjustment buttons to set your desired wake-up time. Confirm the setting by pressing the alarm button again or waiting for the display to return to current time.
3.3 Selecting Alarm Mode (Vibrate, Beep, or Both)
The alarm clock offers flexible wake-up options:
- Vibration Only: Ideal for discreet waking without disturbing others. Place the unit under your pillow.
- Beep Only: Standard audible alarm.
- Both Vibration and Beep: Combines both methods for enhanced wake-up effectiveness.
Use the mode selection switch (often labeled with icons for vibration and sound) to choose your preferred alarm method.
3.4 Snooze Function
When the alarm sounds or vibrates, press the 'SNOOZE' button to temporarily pause the alarm. The alarm will reactivate after a short interval (typically 5-9 minutes).
3.5 Backlight Activation
The backlight is activated by pressing the snooze button, allowing for easy viewing of the time in low-light conditions.

Image 2: The alarm clock positioned on a nightstand, showing its compact size and clear digital display.
4. Features
- Pillow Alarm Function: Designed to be placed under a pillow to wake you with vibration.
- Vibrate or Beep to Wake: Offers options for vibration, beep, or both for personalized wake-up experience.
- Dual Time Displays: Clearly shows both the current time and the set alarm time.
- Backlight: Activated by the snooze button for visibility in the dark.
- Battery Operated: Uses 3x AAA batteries (not included) for portability and convenience.

Image 3: Visual representation of the alarm clock's primary features and usage scenarios.
5. Maintenance
5.1 Battery Replacement
Replace batteries when the display dims or the alarm function becomes unreliable. Always use fresh AAA batteries.
5.2 Cleaning
Wipe the exterior of the alarm clock with a soft, dry cloth. Avoid using abrasive cleaners or solvents, as these may damage the finish or internal components.
5.3 Storage
If storing the alarm clock for an extended period, remove the batteries to prevent leakage and potential damage to the unit.
6. Troubleshooting
If you encounter issues with your Sharp Pillow Personal Alarm Clock, consider the following:
- Alarm Not Activating: Check if the alarm time is correctly set and if the alarm mode (vibration/beep) is selected. Ensure batteries are fresh and correctly inserted.
- Dim Display: Replace batteries with new ones. The backlight may also be dim if batteries are low.
- Inconsistent Vibration/Beep: This often indicates low battery power. Replace all 3 AAA batteries.
- Incorrect Time Display: Re-set the current time using the hour and minute adjustment buttons.
For persistent issues, contact Sharp customer support.
7. Specifications
- Model Number: 42311546
- Product Dimensions: 3.27"W x 3.25"H x 1.1"D
- Weight: Approximately 4.96 ounces
- Power Source: 3 AAA batteries (not included)
- Display Type: LCD
- Style: Digital
- Special Feature: Alarm (Vibration/Beep)
- Color: Black
- Indoor/Outdoor Usage: Indoor

Image 4: Detailed dimensions of the alarm clock for reference.
8. Product Video
Video 1: A 360-degree view of the SHARP Vibrating Pillow Alarm Clock, showcasing its design and features from all angles.
9. Warranty and Support
For information regarding product warranty, please refer to the documentation included with your purchase or visit the official Sharp website. For technical support or further assistance, please contact Sharp customer service through their official channels.





