Introduction
The MySmile LP221 Cordless Water Flosser is designed to provide effective and hygienic oral care. This device utilizes a powerful water pulse to thoroughly clean between teeth and below the gum line, aiding in the removal of food residues and stains, promoting fresh breath, and improving gum health. It features an OLED display, multiple customizable modes, and a UVC self-cleaning function for optimal hygiene.

Image: The MySmile LP221 Cordless Water Flosser, showcasing the device, various jet tips, charging cable, and storage pouch, alongside its product packaging.
Product Features
- Powerful Water Pulse: Generates 2000-2800 times/min water pulse with a pressure range of 40-150 PSI for thorough cleaning.
- Customizable Modes & Display: Features 4 modes (Soft, Normal, Strong, Pulse) and 3 pressure levels (excluding Pulse mode) for 10 customizable flossing patterns. A large OLED display shows battery power, water temperature, mode, and pressure level.
- UVC Self-Cleaning: Built-in UVC light provides a 120-second self-cleaning process to maintain hygiene of the water tank and jet tips.
- Large Water Reservoir: 335ML capacity reduces the need for frequent refills during use.
- Long-Lasting Battery: 1800 mAh battery provides up to 40 days of use on the lowest mode and is rechargeable via Type-C USB.
- IPX7 Waterproof: Allows for safe use in the shower.
- Thoughtful Design: Includes a 3-step start to prevent accidental spraying, a filter at the gravity-ball sucker to prevent clogging, and a PU pouch for portability.

Image: An internal view of the MySmile LP221 water flosser, highlighting the pump mechanism, battery, and OLED display, illustrating its advanced technology.
Components and Accessories
The MySmile LP221 Cordless Water Flosser package includes the following items:
- MySmile LP221 Cordless Water Flosser Unit
- 8 x Jet Tips (various types for different oral care needs)
- 1 x Type-C USB Charging Cable
- 1 x Storage Pouch
- User Manual (this document)

Image: A set of standard jet tips, designed for general daily cleaning.

Image: A dental plaque tip, specifically designed for cleaning around implants, crowns, and bridges.

Image: An orthodontic tip, useful for removing food debris caught in braces.

Image: A periodontal tip, designed for rinsing and massaging deep below the gumline.

Image: A tongue cleaner tip, used to remove bacteria buildup for fresher breath.
Setup
- Charge the Device: Before first use, fully charge the water flosser using the provided Type-C USB charging cable. Connect it to a 5V 1A standard power source (computer, power adapter, power bank, or car adapter). The OLED display will indicate battery status.
- Attach Jet Tip: Select the desired jet tip and firmly insert it into the opening at the top of the flosser handle until it clicks into place.
- Fill Water Tank: Open the water tank cover and fill the 335 ml reservoir with warm water. Close the cover securely.
Operating Instructions
Follow these steps for effective water flossing:
- Turn On: Press the power button to turn on the device. The OLED display will illuminate.
- Select Mode and Pressure: Use the mode button to cycle through Soft, Normal, Strong, and Pulse modes. Use the pressure level buttons (+/-) to adjust the water pressure within the selected mode (not applicable for Pulse mode).
- Position the Tip: Lean over a sink. Place the tip of the flosser between your teeth, directing the water flow at a 90-degree angle to your gum line.
- Begin Flossing: Activate the water stream. Move the tip along your gum line and between your teeth, pausing briefly at each tooth to allow the water to clean thoroughly.
- Finish: When finished, turn off the device by pressing the power button. Remove the tip for cleaning and storage.

Image: A person demonstrating the use of the MySmile water flosser, showing proper technique for oral cleaning.
Modes and Pressure Levels
The MySmile LP221 offers four distinct modes and adjustable pressure settings to cater to various oral care needs:
| Mode | Pressure Range (PSI) | Description |
|---|---|---|
| Soft | 40-80 | Recommended for sensitive teeth, new users, and children above 8 years old. |
| Normal | 80-120 | Ideal for daily cleaning for the majority of users. |
| Strong | 120-150 | Suitable for deep cleaning and removing hard-to-clean stains. |
| Pulse | 40-120 | Provides gum massage and is beneficial for individuals with mild periodontitis. |

Image: The OLED display of the MySmile LP221, illustrating the various modes (Soft, Normal, Strong, Pulse) and their corresponding pressure levels.
Maintenance
UVC Self-Cleaning Function
The MySmile LP221 features a built-in UVC light for self-cleaning, ensuring the water tank and jet tips remain hygienic. To activate the UVC self-cleaning process, ensure the device is powered on and the water tank is empty or contains clean water. The UVC light will operate for 120 seconds, indicated by a countdown on the OLED display.

Image: An illustration of the specialized UVC light inside the water flosser, demonstrating its function in keeping the water tank and jet tips unpolluted for optimal and hygienic oral care.
General Cleaning
- After Each Use: Empty any remaining water from the reservoir. Detach the jet tip and rinse both the tip and the main unit under running water.
- Drying: Allow all components to air dry completely before reassembling or storing the device.
- Exterior Cleaning: Wipe the exterior of the device with a soft, damp cloth. Do not use abrasive cleaners or harsh chemicals.
- Tip Storage: Store jet tips in a clean, dry place, preferably in the provided storage pouch.
Safety Information
Please read and adhere to the following safety guidelines to ensure safe operation and prevent damage to the device or injury:
- Do not immerse the device in water for prolonged periods or expose it to high temperatures.
- Use only approved chargers. Charge the device with the Type-C USB charging cord specified as 5V 1A standard, included in the original packaging.
- Keep the charging port tightly closed with its cover when the device is in use or not charging.
- Keep the device out of reach of children.
- Statements regarding dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition.
Specifications
| Feature | Detail |
|---|---|
| Model Number | LP221 |
| Product Dimensions | 9.25 x 3.2 x 3.5 inches |
| Weight | 1.01 Pounds |
| Water Tank Capacity | 335 ml (11.33 Fl Oz) |
| Battery Type | 1 Lithium Ion battery (included) |
| Battery Capacity | 1800 mAh |
| Battery Life | Up to 40 days (on lowest mode) |
| Water Pressure Range | 40-150 PSI |
| Water Pulse Frequency | 2000-2800 times/min |
| Wattage | 4 watts |
| Waterproof Rating | IPX7 |
| Special Features | OLED Display, Multiple Operation Modes, Multiple Pressure Settings, Multiple Tips, Rechargeable, UVC Sterilization |
Troubleshooting
If you encounter any issues with your MySmile LP221 Water Flosser, please refer to the following common troubleshooting tips:
- No Power/Device Not Turning On: Ensure the device is fully charged. Connect it to the charger and check the OLED display for battery indication.
- Weak Water Pressure: Check if the water tank is sufficiently filled. Ensure the jet tip is securely attached. Clean the filter at the end of the gravity-ball sucker to prevent clogging.
- Water Leakage: Ensure the water tank cover is securely closed and the jet tip is properly inserted.
- Unusual Noise: If the device makes unusual noises, turn it off immediately and contact customer support.
- UVC Light Not Activating: Ensure the device is powered on and the water tank is empty or contains clean water. If the issue persists, contact support.
For issues not listed here, or if troubleshooting steps do not resolve the problem, please contact MySmile customer support.
Warranty and Support
MySmile is committed to providing high-quality products. While specific warranty details are not provided in this manual, please retain your proof of purchase for any warranty claims. For product support, technical assistance, or warranty inquiries, please visit the official MySmile website or contact their customer service department. Contact information can typically be found on the product packaging or the brand's official online presence.
You can visit the MySmile Store on Amazon for more information and support: MySmile Amazon Store

