1. Introduction
This manual provides instructions for the safe and effective use of your lvifloae S18 Invisible Wearable Electric Breast Pump. Please read this manual thoroughly before first use and retain it for future reference. The lvifloae S18 is designed to offer a convenient and discreet breast milk expression experience.

Image: The lvifloae S18 Invisible Wearable Electric Breast Pump, shown with included accessories.
2. Important Safety Information
Always follow basic safety precautions when using electrical products, especially when children are present. Failure to follow these instructions may result in electric shock, fire, or serious injury.
- Do not immerse the motor unit in water or other liquids.
- Keep the device away from heat sources.
- Use only the provided charging cable and a compatible 5V 1A power adapter.
- Inspect all components before each use for damage. Discard and replace any damaged parts.
- This device is for personal use only. Do not share with others.
- Consult a healthcare professional if you experience pain or discomfort during pumping.
- Keep out of reach of children.
3. Package Contents and Product Components
3.1 Package Contents
The package includes the following items:
- 1 x Breast Pump (Motor Unit and Milk Collector Assembly)
- 1 x USB-C Charging Cable
- 1 x Bra Adjustment Buckle
- 1 x User Manual
3.2 Product Components
Familiarize yourself with the individual parts of the breast pump for proper assembly and cleaning.

Image: Exploded view of the breast pump components.
- Pump Motor: The main unit containing the motor and control buttons.
- Silicone Diaphragm: Creates the vacuum for suction.
- Valve: Controls milk flow.
- Bra Adjustment Buckle: For securing the pump within a bra.
- Milk Collector: The container for expressed milk (180ml capacity).
- Flange: The part that comes into contact with the breast (24mm diameter).
- Type-C Cable: For charging the pump.
4. Setup and Assembly
Before first use, sterilize all parts that come into contact with breast milk (flange, milk collector, silicone diaphragm, valve). Ensure all parts are completely dry before assembly.
4.1 Assembly Steps
- Insert the valve into the bottom of the milk collector.
- Place the silicone diaphragm securely onto the milk collector, ensuring a tight seal.
- Attach the flange to the milk collector.
- Connect the assembled milk collector with the flange and diaphragm to the pump motor unit, ensuring it clicks into place securely.
4.2 Wearing the Breast Pump
For optimal performance and comfort, position the pump correctly.

Image: Instructions for correctly wearing the breast pump.
- Step 1: Bend slightly forward to ensure your nipple is centered within the flange tunnel. Press the pump firmly against your breast to create a secure seal.
- Step 2: Once the pump is securely attached, wear a nursing bra to hold it in place. Ensure the main motor unit is facing upwards for easy access to controls.
5. Operating Instructions
The lvifloae S18 features two modes and nine suction levels for personalized expression.
5.1 Charging the Device
- Before first use, fully charge the breast pump.
- Connect the USB-C charging cable to the charging port on the motor unit and plug the other end into a 5V 1A USB power adapter (not included).
- The indicator light will show charging status. A full charge provides extended operating time.
- The built-in 1000mAh rechargeable lithium battery ensures long working time.
5.2 Power On/Off and Mode Selection
- Power On: Press and hold the power button on the motor unit.
- Mode Selection: Press the mode button to switch between Massage Mode and Expression Mode.
- Suction Level Adjustment: Use the '+' and '-' buttons to adjust the suction intensity (9 levels available in each mode).
- Power Off: Press and hold the power button to turn off the device.
5.3 Understanding Modes

Image: Illustration of Massage Mode and Expression Mode waveforms.
- Massage Mode (1-9 Levels): This mode provides a quick and shallow suction rhythm, designed to stimulate milk let-down. It is recommended to start with this mode for a few minutes.
- Expression Mode (1-9 Levels): This mode offers a slower and deeper suction rhythm, mimicking a baby's feeding pattern to efficiently express milk. Switch to this mode once milk flow begins.
Find the suction level that feels comfortable and effective for you. The pump operates with low noise, less than 40dB, to ensure a discreet experience.

Image: Noise level comparison, highlighting the quiet operation of the breast pump.
6. Cleaning and Maintenance
Proper cleaning and maintenance are crucial for hygiene and the longevity of your breast pump. Always clean parts immediately after each use.
6.1 Disassembly for Cleaning
- Turn off the pump and carefully remove it from your breast.
- Gently detach the motor unit from the milk collector assembly.
- Disassemble all parts that come into contact with breast milk: flange, milk collector, silicone diaphragm, and valve.
6.2 Cleaning Instructions
- Motor Unit: The motor unit should not be washed or immersed in water. Wipe it clean with a soft, damp cloth.
- Milk Contact Parts (Flange, Milk Collector, Silicone Diaphragm, Valve):
- Rinse immediately after use with cold water to remove milk residue.
- Wash thoroughly with warm soapy water using a mild dish soap.
- Rinse all parts under running water to remove soap residue.
- Sterilize by boiling in water for 3-5 minutes or using a steam sterilizer.
- Allow all parts to air dry completely on a clean drying rack before reassembly or storage.
6.3 Storage
Store all clean and dry components in a clean, dry place away from direct sunlight and dust.
7. Troubleshooting
If you encounter issues with your breast pump, refer to the following common problems and solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| No suction or weak suction |
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| Pump not turning on |
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| Milk leaking from pump |
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| Pain or discomfort during pumping |
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8. Product Specifications
| Feature | Specification |
|---|---|
| Model | S18 (Item model number: lvifloae95ngh4ad3w) |
| Brand | lvifloae |
| Material | PP + Silicone |
| Flange Diameter | 24mm |
| Storage Capacity | 180ml |
| Modes | 2 (Massage Mode, Expression Mode) |
| Suction Levels | 9 per mode |
| Battery Capacity | 3.7V 1000mAh |
| Charging Port | Type-C |
| Charging Voltage | 5V 1A |
| Item Size | 11 x 12 x 6 cm (4.3 x 4.7 x 2.5 inches) |
| Item Weight | 225g (7.9oz) |
| Product Dimensions (Pack) | 7.48 x 5.91 x 3.15 inches; 1.41 Pounds |
| ASIN | B0DK5YWS5M |
9. Warranty and Customer Support
For warranty information or customer support, please contact the manufacturer, lvifloae, through your purchase platform or their official website. Keep your proof of purchase for warranty claims.
Optional protection plans may be available for extended coverage. Please refer to the details provided at the time of purchase for information on these plans.
- Manufacturer: lvifloae
- Legal Disclaimer: 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.