Introduction
Thank you for choosing the Onlyone Sonic Electric Toothbrush Model T2431A0. This manual provides essential information for the safe and effective use of your new electric toothbrush. Please read it thoroughly before first use and keep it for future reference.
What's in the Box
- Onlyone Sonic Electric Toothbrush Handle x1
- Brush Heads x8
- Charging Base x1
- User Manual x1
- Travel Case x1
Setup
1. Attaching the Brush Head
Align the brush head with the metal shaft on the toothbrush handle and push down firmly until it clicks into place. Ensure it is securely attached before use.
2. Charging the Toothbrush
Place the toothbrush handle onto the wireless charging base. Connect the charging base to a power source. The battery indicator lights on the handle will illuminate to show charging status. A full charge takes approximately 4-5 hours and provides up to 30 days of use.

The Onlyone Sonic Electric Toothbrush charging wirelessly on its base, with indicator lights showing battery status.
Operating Instructions
1. Powering On/Off
Press the power button once to turn the toothbrush on. Press it again to cycle through modes or hold it down for a few seconds to turn it off.
2. Selecting Cleaning Modes and Intensity
The toothbrush features 5 cleaning modes and 3 intensity levels for a customizable experience:
- Clean: Standard mode for daily plaque removal.
- Soft: Gentle cleaning for sensitive teeth and gums.
- Whiten: Designed to remove surface stains for brighter teeth.
- Massage: Gently stimulates gums for improved gum health.
- Polish: For polishing teeth and enhancing brightness.
Press the mode button to cycle through the 5 cleaning modes. The indicator light next to the selected mode will illuminate. To adjust intensity, press the intensity button (usually the second button from the top) to select between low, medium, and high settings, indicated by the dots above the mode names.
This video demonstrates the various cleaning modes and intensity levels of the Onlyone Sonic Electric Toothbrush.
3. Smart Timer and QuadPacer
The toothbrush includes a built-in 2-minute smart timer, which is the dentist-recommended brushing time. Additionally, a 30-second interval reminder (QuadPacer) will briefly pause the brushing action, signaling you to move to a different quadrant of your mouth. This ensures thorough cleaning of all areas.

The toothbrush features a 2-minute timer for optimal brushing duration.
4. Smart Memory Function
The toothbrush is equipped with a smart memory function that remembers your last used cleaning mode and intensity level. When you turn it on again, it will automatically start with your preferred settings.

The smart memory function retains your last used mode and intensity for convenient use.
Maintenance
1. Cleaning the Toothbrush
After each use, rinse the brush head thoroughly under running water. Wipe the handle with a damp cloth. Do not immerse the charging base in water.

The toothbrush is IPX7 waterproof, allowing for safe rinsing under running water.
2. Replacing Brush Heads
For optimal performance and hygiene, it is recommended to replace the brush head every 3 months, or sooner if the bristles become frayed.

The toothbrush comes with 8 brush heads, providing a 2-year supply based on 3-month replacement.
3. Travel Case
Use the included travel case to protect your toothbrush and brush heads when traveling, ensuring cleanliness and portability.

The included travel case makes the toothbrush convenient for travel.
Troubleshooting
If you experience any issues with your Onlyone Sonic Electric Toothbrush, please try the following:
- Toothbrush not turning on: Ensure the toothbrush is fully charged.
- Weak vibration: Recharge the toothbrush. If the issue persists, try a different cleaning mode or intensity level.
- Brush head not vibrating: Ensure the brush head is securely attached to the handle.
For further assistance, please contact customer support.
Specifications
| Feature | Detail |
|---|---|
| Model Number | T2431A0 |
| Product Dimensions | 7.87 x 2.95 x 2.56 inches; 2.82 ounces |
| Power Source | Battery Powered |
| Special Features | Multiple Cleaning Modes, Portable, Rechargeable, Ultrasonic Technology, Smart Timer, Memory Function |
| Waterproof Rating | IPX7 |
| Vibration Frequency | 48,000 VPM |
| Battery Life | Up to 30 days |
Safety Information
- Always use this product under adult supervision.
- Replace brush heads every 3 months or when bristles become frayed.
- Not intended for use by children under 3 years old.
- Do not use for purposes other than oral hygiene.
- Always follow the 2-minute brushing timer for optimal results.
Warranty & Support
For warranty information or customer support, please refer to the contact details provided with your product packaging or visit the official Onlyone website. Keep your purchase receipt as proof of purchase.
This video provides an overview of the Onlyone Rechargeable Ultrasonic Electric Toothbrush and its features.