1. Product Overview
The OTEEIDA S12 Pro is a wearable and portable hands-free breast pump designed for convenience and efficiency. It features a soft DoubleFit flange for comfortable use and is engineered for discreet operation.

The OTEEIDA S12 Pro breast pump is designed to be lightweight at 240g, offering a hidden and fitting profile for discreet wear.
This pump provides hospital-grade suction, ensuring effective milk expression. It operates with minimal noise, allowing for discreet pumping in various environments.

Experience hospital-grade suction with the OTEEIDA S12 Pro, designed to optimize milk output.
2. What's in the Box
Your OTEEIDA S12 Pro package includes the following components:

All components included in the OTEEIDA S12 Pro breast pump package.
- Pump Motor (x2)
- Silicone Diaphragm (x2)
- Connector (x2)
- Duckbill Valve (x4)
- Milk Collector (x2)
- 21mm Flange Insert (x2)
- 19mm Flange Insert (x2)
- Silicone Plug (x1)
- Bra Adjustment Buckles (x2)
- Breastmilk Storage Bag (x5)
- USB Type-C Cable (x2)
- Nipple Ruler (x1)
- User Manual (x1)
- 24mm Flange (x2)
3. Assembly and Setup
Follow these steps to assemble your OTEEIDA S12 Pro breast pump:

Step-by-step assembly guide for the OTEEIDA S12 Pro breast pump.
- Place the silicone diaphragm into the connector: Ensure it is seated securely.
- Install the duckbill valve onto the connector: Press firmly to create a seal.
- Place the assembled breast pump connector into the milk collector: Align and push until it clicks into place.
- Gently push the flange into the milk collector without any gaps: A proper seal is crucial for suction.
- Insert the silicone plug into the milk collector: Ensure the surface is flush to prevent leaks.
- Assemble the pump motor and milk collector without gaps: Securely attach the motor unit to the assembled milk collector.
4. Operating Instructions
The OTEEIDA S12 Pro offers multiple modes and suction levels for a personalized pumping experience.

The OTEEIDA S12 Pro features 4 modes and 12 adjustable suction levels.
Modes and Suction Levels:
- Massage Mode: Gentle stimulation to initiate milk flow.
- Breast Pumping Mode: Consistent suction for efficient milk expression.
- Frequency Conversion Mode: Alternating suction patterns to mimic a baby's natural feeding.
- Automatic Mode: Combines different modes for a comprehensive pumping session.
Each mode has 12 adjustable suction levels. Use the '+' and '-' buttons on the pump motor to increase or decrease suction intensity. The large LED display shows the current mode, suction level, and battery status.

Control panel with LED display for monitoring settings.
Quiet Operation:
The S12 Pro is designed for quiet operation, with noise levels below 40dB, ensuring discretion during use.

The pump operates quietly, allowing for peaceful environments.
Charging:
The pump units are rechargeable via USB Type-C cables. Ensure both units are fully charged before use for optimal performance.

USB Type-C charging port for convenient power replenishment.
5. Flange Sizing Guide
Correct flange sizing is essential for comfort and effective milk expression. Use the included nipple ruler to determine your appropriate flange size.

Guide to selecting the correct flange size for optimal comfort and pumping efficiency.
- Measure your nipple: Use the nipple ruler to measure the diameter of your nipple at its base.
- Select the appropriate flange: The S12 Pro comes with 24mm flanges and 19mm, 21mm inserts. Choose the size that allows your nipple to move freely within the tunnel without excessive rubbing or compression.
- Check for proper fit: The nipple should be centered in the flange tunnel. If the nipple rubs against the sides or the areola is pulled excessively into the tunnel, adjust the size.
6. Cleaning and Maintenance
Proper cleaning and maintenance ensure the longevity and hygiene of your breast pump. All parts that come into contact with breast milk are BPA-free and made from food-grade silicone.

Components are made from food-grade silicone for safety and durability.
Cleaning Instructions:
- Disassemble: Separate all pump components after each use.
- Wash: Wash all milk-contacting parts (flanges, milk collectors, valves, diaphragms, connectors, silicone plugs) with warm soapy water. Use a dedicated brush for cleaning.
- Rinse: Rinse thoroughly under clean running water.
- Sterilize (optional, but recommended): Sterilize components regularly using boiling water, steam sterilizer, or a dishwasher with a sanitizing cycle.
- Dry: Air dry all parts completely on a clean paper towel or drying rack. Avoid using cloth towels as they may leave lint.
- Motor Unit: Wipe the motor unit with a clean, damp cloth. Do not immerse the motor unit in water.
7. Product Specifications
| Feature | Specification |
|---|---|
| Model Number | S12 Pro (MY-375) |
| Product Dimensions | 10.43 x 6.69 x 3.74 inches |
| Item Weight | 0.84 Kilograms (1.84 Pounds) |
| Milk Collector Capacity | 7 oz / 210 ml |
| Suction Levels | 12 levels |
| Operating Modes | 4 (Massage, Breast Pumping, Frequency Conversion, Automatic) |
| Noise Level | <40dB |
| Material | BPA-free, Food-grade Silicone |
| Charging Type | USB Type-C |
| Color | Snow White |
| Manufacturer | OTEEIDA |
8. Troubleshooting
If you encounter any issues with your OTEEIDA S12 Pro breast pump, please refer to the following common troubleshooting tips:
- No Suction or Weak Suction:
- Ensure all parts are correctly assembled and sealed without gaps.
- Check that the duckbill valve is clean and not damaged. Replace if necessary.
- Verify the silicone diaphragm is properly seated and not torn.
- Confirm the flange size is appropriate for your nipple.
- Pump Not Turning On:
- Ensure the pump motor is fully charged. Connect to a power source using the USB Type-C cable.
- Press and hold the power button for a few seconds to turn on.
- Leaking Milk:
- Check that the milk collector is securely attached to the motor unit.
- Ensure the silicone plug is inserted flush and creates a tight seal.
- Do not overfill the milk collector beyond its maximum capacity (210ml).
- Unusual Noise:
- Verify all components are assembled correctly and no foreign objects are present.
- If the noise persists and is disruptive, contact customer support.
For further assistance, please contact OTEEIDA customer support.
9. Warranty and Support
OTEEIDA provides a standard manufacturer's warranty for the S12 Pro breast pump. Please refer to the warranty card included in your package for specific terms and conditions, including warranty duration and coverage details.
For product support, technical assistance, or warranty claims, please contact OTEEIDA customer service through the contact information provided in your user manual or on the official OTEEIDA website. When contacting support, please have your product model number (S12 Pro) and purchase date available.