Introduction
The Sejoy Electric Water Flosser is designed to enhance your daily oral hygiene routine. This portable and rechargeable oral irrigator provides a powerful and effective way to clean between teeth and below the gumline, areas often missed by traditional brushing. With multiple cleaning modes and specialized nozzles, it caters to various oral care needs for the entire family, promoting healthier gums and brighter teeth.

Image: Sejoy Cordless Water Flosser and its included accessories.
Safety Information
Please read all safety instructions carefully before using the Sejoy Water Flosser to ensure safe and effective operation.
- Always unplug or turn off the device when not in use.
- Do not use while sleeping or with loose teeth.
- Keep the device away from children.
- Do not use if you have any medical conditions that may be affected by water pressure. Consult your dentist if unsure.
- Change the nozzle every three months for optimal hygiene.
- Always follow the instructions provided in this manual.
Product Features
- Complete Family Oral Care Solution: Includes 6 nozzles for diverse needs, with a 360° rotatable design for comprehensive cleaning.
- Customizable Cleaning Experience: Five optional cleaning modes: Soft, Gentle, Normal, Strong, and Pulse.
- Smart & Efficient Water Tank: 350ml detachable tank for up to 120 seconds of continuous use. Easy to clean and IPX7 waterproof.
- Long-lasting Power & USB Convenience: 1800mAh lithium battery provides up to 30 days of use on a 4-hour charge. USB cable included for charging anywhere.
- Precision Cleaning: Water pressure range of 20-150 PSI with unique pulsation technique removes 99.99% of food residue. Ideal for periodontitis and braces.

Image: Illustration of the five cleaning modes available on the water flosser.

Image: Overview of the six specialized nozzles for various oral care needs.
Setup and First Use
- Charge the Device: Fully charge the Water Flosser for 4 hours using the included USB cable before first use. The battery indicator lights will show charging progress.
- Fill the Water Tank: Detach the 350ml water tank by turning it counter-clockwise. Fill it with warm water.
- Attach Nozzle: Select the desired nozzle and firmly insert it into the top of the flosser until it clicks into place.
- Select Cleaning Mode: Press the 'MODE' button to cycle through the five cleaning modes: Soft, Gentle, Normal, Strong, and Pulse. For first-time users, it is recommended to select the Soft mode.
- Position Nozzle: Place the nozzle in your mouth, ensuring it is aimed at your gum line. This helps prevent unexpected sprays.

Image: Instructions for detaching and refilling the water tank.

Image: The water flosser being charged via USB, highlighting its powerful battery.
Operating Instructions
- Begin Flossing: Turn on the Water Flosser by pressing the ON/OFF button. Lean over the sink to allow water to flow out of your mouth.
- Clean Thoroughly: Move the nozzle along your gum line and between teeth, pausing briefly on each area. Ensure you cover all surfaces for thorough cleaning.
- Adjust Pressure (if needed): If the pressure is too strong or too weak, turn off the device, adjust the mode, and then restart.
- Completion: The device may automatically shut off after a set time (e.g., 120 seconds) or when the water tank is empty.
Video: Demonstrates the use of the Sejoy Water Dental Flosser for teeth cleaning and flossing, showcasing its effectiveness.
Video: Shows the portability of the water flosser and how it can be used for daily oral hygiene.
Video: Provides a detailed demonstration of the Sejoy Oral Irrigator in action, highlighting its features and benefits.
Video: Illustrates how the Sejoy Water Flosser can be used effectively for braces, including for children.
Maintenance
Proper maintenance ensures the longevity and hygiene of your Sejoy Water Flosser.
- After Each Use: Empty any remaining water from the tank. Clean the nozzle and the water tank thoroughly with warm water.
- Drying: Allow the nozzle and water tank to air dry completely before reassembling or storing the Water Flosser.
- Nozzle Replacement: For optimal hygiene and performance, replace nozzles every three months.
- Cleaning the Unit: Wipe the main unit with a soft, damp cloth. Do not immerse the main unit in water beyond its IPX7 rating.

Image: The water flosser's IPX7 waterproof feature, allowing for safe use in wet environments.
Troubleshooting
If you encounter any issues with your Sejoy Water Flosser, please refer to the following common troubleshooting tips:
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not turn on. | Low battery or not charged. | Ensure the device is fully charged (4 hours for full charge). |
| Weak water pressure. | Incorrect mode selected or low water level. | Select a stronger cleaning mode (e.g., Normal or Strong). Refill the water tank. |
| Water leaks from the tank. | Water tank not properly secured. | Ensure the water tank is securely attached and twisted clockwise until tight. |
| No water comes out. | Nozzle blocked or water tank empty. | Check if the nozzle is clogged and clean it. Refill the water tank. |
Specifications
| Feature | Detail |
|---|---|
| Model Number | AOW11 |
| Product Dimensions | 3.54 x 3.54 x 9.45 inches; 13.76 ounces |
| Battery | 1800mAh Lithium Ion (included) |
| Water Pressure Range | 20-150 PSI |
| Water Tank Capacity | 350ml |
| Waterproof Level | IPX7 |
| Cleaning Modes | 5 (Soft, Gentle, Normal, Strong, Pulse) |
| Nozzles Included | 6 (Standard Jets, Tongue Cleaner, Orthodontic Tip) |
| Charging Time | Approx. 4 hours |
| Usage Time | Up to 30 days on a single charge |
Warranty and Support
For warranty information, technical support, or customer service inquiries, please refer to the contact information provided with your product packaging or visit the official Sejoy website. Keep your purchase receipt for warranty claims.