1. Introduction
Thank you for choosing the BESTOPE BWF004 Rechargeable Dental Flosser Oral Irrigator. This device is designed to enhance your oral hygiene routine by effectively cleaning between teeth and below the gumline, where traditional brushing and flossing may not reach. Please read this manual thoroughly before first use to ensure proper operation and maintenance.
2. Product Overview and Components
The BESTOPE BWF004 Oral Irrigator comes with various components designed for comprehensive oral care.

Image 2.1: The BESTOPE BWF004 Dental Flosser, its packaging, and included accessories such as various jet tips and a travel pouch.

Image 2.2: Detailed diagram showing the main parts of the flosser: replaceable nozzle, power button, mode selection button, LED indicators, charging hole, 360° rotatable nozzle, nozzle release button, water tank entrance, and water tank.

Image 2.3: Illustration of the various replaceable jet tips: Ordinary High-pressure Tip for daily cleaning, Orthodontic Tip for braces/dental implants, Nose Cleaner Tip for nasal cleaning, Dental Plaque Tip for hard-to-reach areas, and Tongue Cleaner Tip for tongue coating.
3. Setup
Follow these steps to prepare your dental flosser for first use.
- Charging the Device: Before initial use, fully charge the device. Connect the charging cable to the charging hole at the bottom of the unit. The LED indicators will show charging progress. A full charge provides approximately 30 days of usage. Ensure the protective cover is inserted after charging to maintain IPX7 waterproofing.
- Attaching a Jet Tip: Select the desired jet tip. Insert the tip into the hole at the top of the flosser until you hear a 'click' sound, indicating it is securely locked.
- Filling the Water Tank: Open the water tank cover. Fill the 300ml water tank with lukewarm water. Close the cover securely to prevent leaks. The removable design allows for easy filling and cleaning.

Image 3.1: Visual guide for setup: Step 1: Fill the tank with water. Step 2: Install the nozzle until it clicks. Step 3: Choose the desired mode. Step 4: Point to the area between teeth and turn on.

Image 3.2: Demonstrates the ease of filling the 300ml water tank by opening the top cover and pouring water directly into the reservoir.
4. Operating Instructions
Learn how to effectively use your BESTOPE BWF004 Oral Irrigator for optimal oral hygiene.
- Power On/Off: Press the power button to turn the device on. Press it again to turn it off.
- Selecting a Mode: Press the 'MODE' button to cycle through the 5 available pressure settings. The LED indicators will show the selected mode. The device features a memory function, which will recall the last used mode for convenience.
- Using the Flosser: Lean over a sink and place the jet tip in your mouth. Aim the tip at the gumline at a 90-degree angle. Close your lips slightly to prevent splashing but allow water to flow into the sink. Move the tip along the gumline, pausing briefly between teeth. The 360° rotatable nozzle allows you to easily reach all areas of your mouth. The gravity ball design ensures consistent water flow regardless of the device's angle.
- Recommended Modes:
- Super High: High frequency pulse, strong water pressure for deep cleaning.
- High: Strong water pressure for efficient cleaning.
- Medium: Standard water pressure, suitable for most users for deep cleaning between teeth.
- Soft: Gentle water pressure, ideal for first-time users and those with sensitive teeth or gums.
- Low: Massage gums to relieve oral bleeding.

Image 4.1: Diagram illustrating the 5 adjustable clean modes: Super High, High, Medium, Low, and Soft, with descriptions of their intended use.

Image 4.2: A user demonstrating the proper technique for using the dental flosser, with a visual representation of the 5 clean modes and their benefits.
5. Cleaning and Maintenance
Regular cleaning and maintenance will ensure the longevity and hygienic operation of your flosser.
- Emptying the Water Tank: After each use, empty any remaining water from the tank.
- Cleaning the Water Tank: The water tank is removable for easy cleaning. Detach it from the main unit and rinse thoroughly with water. For deeper cleaning, you can use a mild soap solution. Ensure it is completely dry before reattaching.
- Cleaning Jet Tips: Remove the jet tip by pressing the nozzle release button. Rinse the tip under running water. For thorough cleaning, soak tips in a denture cleaning solution or white vinegar for 5-10 minutes, then rinse well.
- Cleaning the Main Unit: Wipe the main unit with a soft, damp cloth. Do not immerse the main unit in water, although it is IPX7 waterproof, direct immersion for cleaning is not recommended for the electronic components.
- Storage: Store the device in a cool, dry place away from direct sunlight.

Image 5.1: Illustration of the gravity ball design ensuring water flow at any angle, and the removable water tank feature for easy cleaning and maintenance.

Image 5.2: The device submerged in water, highlighting its IPX7 waterproof rating, which protects against water immersion.
6. Troubleshooting
If you encounter any issues with your BESTOPE BWF004, please refer to the following common solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not turn on. | Low battery or no charge. | Ensure the device is fully charged. Check charging cable and adapter. |
| Weak water pressure. | Low battery, clogged jet tip, or incorrect mode selection. | Charge the device. Clean the jet tip. Select a higher pressure mode. |
| Water leaks from the device. | Water tank not properly sealed or jet tip not securely attached. | Ensure the water tank cover is closed tightly. Re-attach the jet tip until it clicks. |
| Device suddenly stops working. | Battery issue or internal malfunction. | Attempt to recharge the device. If the issue persists, contact customer support. |
7. Specifications
- Model: BWF004
- Water Tank Capacity: 300ml
- Pressure Modes: 5 (Super High, High, Medium, Low, Soft)
- Water Pressure Range: 20-110 psi
- Battery: 2500mAh Rechargeable Lithium Battery
- Usage Time: Up to 30 days on a single charge
- Waterproof Rating: IPX7
- Nozzle Rotation: 360°
- Dimensions: 22.5 x 8.5 x 6.5 cm
- Weight: 340 g
- Country of Origin: China
8. Safety Information
Please observe the following safety precautions:
- Do not direct water spray under the tongue, into the nose, ear, or other sensitive areas.
- Keep out of reach of children.
- Do not use if you have an open wound in your mouth or have recently undergone oral surgery without consulting a dentist.
- Use only lukewarm water or dentist-recommended solutions.
- Ensure the charging port cover is securely closed when not charging to maintain waterproofing.
- Do not disassemble or attempt to repair the device yourself.
9. Warranty and Support
For warranty information and customer support, please refer to the documentation provided with your purchase or contact BESTOPE customer service directly. Keep your proof of purchase for warranty claims.