1. Introduction
Thank you for purchasing the BT21 Cafe Digital LED Desk Clock featuring CHIMMY. This charming and functional desk clock is designed to add a touch of character to your space while providing essential timekeeping features. This manual provides detailed instructions for setting up, operating, and maintaining your new clock.

Image: The BT21 Cafe Digital LED Desk Clock featuring the CHIMMY character, displayed in a cafe-style housing.
2. Product Overview
The BT21 Cafe Digital LED Desk Clock is a battery-powered digital clock with an LED display, sleep mode, and an alarm function. It features the beloved BT21 CHIMMY character in a decorative cafe-style housing.
Components and Controls

Image: A diagram illustrating the front display and rear controls of the BT21 Cafe Digital LED Desk Clock. Key components are numbered for easy identification.
- Front Display:
- 1. Month/Day display
- 2. Days of the week display
- 3. AM/PM Indication
- 4. Time & Year display
- Rear Controls:
- 1. SET button
- 2. UP button
- 3. DOWN button
- 4. LED button
- 5. Battery slot
- 6. C-TYPE Port (for power)
- 7. Sound (vibration) sensor
3. Setup
3.1 Powering the Clock
The clock operates on battery power. Ensure you have suitable batteries (not included) for operation. Alternatively, you can power the clock using a C-TYPE USB cable (not included).
- Open the battery slot cover (5) on the rear of the clock.
- Insert the required batteries, ensuring correct polarity.
- Close the battery slot cover.
- Alternatively, connect a C-TYPE USB cable to the C-TYPE Port (6) and a power source.
Upon successful power connection, the initial screen display will appear.
3.2 Setting the Time and Date

Image: A visual guide demonstrating how to set the time and date using the SET and UP/DOWN buttons on the clock's rear.
- Press and hold the rear SET button (1) for approximately 3 seconds to enter time setting mode.
- First, set the hour using the UP (2) / DOWN (3) buttons. Press the SET button briefly to confirm the hour and move to minute setting.
- Set the minute using the UP / DOWN buttons. Press the SET button briefly to confirm the minute and move to year setting.
- Continue setting the year, month, and day in order, pressing the SET button briefly after each adjustment to confirm and proceed to the next setting.
- After setting the day, press the SET button to exit the setting mode.
4. Operating Instructions
4.1 LED Light Function

Image: A visual guide showing the LED button on the back of the clock and the resulting illumination of the character inside the cafe housing.
To illuminate the character inside the clock's cafe housing:
- Press the LED button (4) on the back of the clock briefly.
- The LED light will turn on, highlighting the character.
4.2 Sleep Mode

Image: The clock display in sleep mode, showing the time briefly shining when checked, with a sleeping character illustration.
To conserve battery life, you can put the clock into sleep mode:
- Press the SET button (1) briefly. The display will turn off.
- In sleep mode, the display will briefly shine when you check the time (see section 4.3).
4.3 Wake Up Function (Sound/Vibration Sensor)

Image: Two panels demonstrating how to activate the clock display from sleep mode by clapping lightly or tapping the top of the clock.
The clock features a sound (vibration) sensor (7) that allows you to check the time for 10 seconds when the clock is in sleep mode:
- While the clock is in sleep mode, clap lightly near the clock.
- Alternatively, gently tap on the top of the clock.
- The display will light up for 10 seconds, showing the current time.
4.4 Alarm Clock
The BT21 Cafe Digital LED Desk Clock includes an alarm function. Specific instructions for setting and managing the alarm are not detailed in the provided materials. Please refer to the full manufacturer's manual or contact customer support for comprehensive alarm setup instructions.
5. Maintenance
- Cleaning: Wipe the clock gently with a soft, dry cloth. Do not use abrasive cleaners or solvents, as they may damage the surface.
- Battery Replacement: When the display dims or functions become erratic, it's time to replace the batteries. Ensure you use fresh, non-rechargeable batteries for optimal performance.
- Storage: If storing the clock for an extended period, remove the batteries to prevent leakage and potential damage.
- Environment: Keep the clock away from direct sunlight, extreme temperatures, and high humidity. This product is designed for indoor use only.
6. Troubleshooting
- Clock not turning on/display not visible:
- Check if batteries are inserted correctly and are not depleted.
- Ensure the C-TYPE USB cable is securely connected to a working power source if using external power.
- If using rechargeable batteries, ensure they are fully charged. Note that some rechargeable batteries may not provide sufficient voltage for consistent operation.
- Time/Date is incorrect:
- Follow the 'Setting the Time and Date' instructions in Section 3.2 carefully.
- LED light not working:
- Ensure the clock has power.
- Press the LED button firmly.
- Wake-up function (sound/vibration) not responding:
- Ensure the clock is in sleep mode (display off).
- Try a louder clap or a firmer tap on the clock.
- Check for any obstructions near the sound sensor.
7. Specifications
| Brand | BT21 |
| Model Number | BT21-CLOCK |
| Display Type | Digital |
| Style | CHIMMY |
| Special Feature | Sleep Mode |
| Power Source | Battery Powered (Batteries not included) |
| Indoor/Outdoor Usage | Indoor |
| Frame Material | Acrylonitrile Butadiene Styrene |
| Mounting Type | Tabletop |
| Alarm Clock | Yes |
| Product Dimensions | 7.09 x 1.5 x 4.72 inches |
| Item Weight | 7.4 ounces |
| Manufacturer | ROYCHE |
8. Warranty Information
Specific warranty information for the BT21 Cafe Digital LED Desk Clock is not provided in the product details. Please retain your proof of purchase and contact the retailer or manufacturer directly for details regarding warranty coverage and terms.
9. Customer Support
For further assistance, technical support, or inquiries regarding your BT21 Cafe Digital LED Desk Clock, please contact the seller or the manufacturer, ROYCHE. You may find contact information on the product packaging or the retailer's website.





