Lansinoh 53751
Lansinoh Discreet Duo Wearable Breast Pump Instruction Manual
Model: 53751
Introduction
The Lansinoh Discreet Duo Wearable Breast Pump is designed for modern mothers seeking convenience and efficiency in their pumping routine. This hands-free, wireless, and portable breast pump allows for discreet milk expression anywhere, anytime. Its ergonomic design ensures comfort, while quiet operation minimizes disturbance. Featuring hospital-strength suction and multiple pumping modes, it adapts to individual needs for optimal milk expression.

Figure 1: Lansinoh Discreet Duo Wearable Breast Pumps.
What's in the Box
Your Lansinoh Discreet Duo Wearable Breast Pump package includes the following components:
- 2x DiscreetDuo Pumps with 6oz collection cups
- 2x 24mm flanges (comes assembled)
- 2x Bra extenders
- 2x 21mm flange inserts
- 2x Valves
- 2x USB charging cables

Figure 2: Package Contents.
Product Features
The Discreet Duo Wearable Breast Pump offers several features designed for convenience and efficiency:
- Portable and Discreet: Lightweight design fits comfortably in your bra for hands-free pumping.
- Customizable Pumping: 4 pumping modes and 9 levels of hospital-strength suction.
- Quiet Operation: Operates at under 45db for discreet use.
- Long-Lasting Battery: Up to 100 minutes of pumping on a single charge.
- Easy to Clean: Just 5 parts, with most components being dishwasher safe.
- Leak-Resistant Design: Engineered to prevent leaks when properly sealed.
- Safe and Hygienic: Made without BPS and BPA, featuring a closed system to prevent milk backflow.

Figure 3: Key Features of the Discreet Duo Pump.
Assembly
The Lansinoh Discreet Duo Wearable Breast Pump is designed for easy assembly with only 5 main parts:
- Ensure all parts (Pump hub, Diaphragm, Collection cup, Duckbill valve, Flange) are clean and dry.
- Insert the duckbill valve firmly into the bottom of the collection cup.
- Place the diaphragm onto the top of the collection cup, ensuring a secure seal.
- Attach the flange to the collection cup, making sure it clicks into place all the way around to prevent leaks.
- Finally, place the pump hub onto the assembled collection cup and flange, aligning the connections.

Figure 4: Easy Assembly with 5 Parts.
Operation
To operate your Lansinoh Discreet Duo Wearable Breast Pump:
- Once assembled, place the pump on your breast, ensuring the nipple is centered in the flange tunnel.
- Slip the pump into your nursing or regular bra. Use the included bra extenders if needed for a comfortable fit.
- Power on the pump using the control buttons on the pump hub. The LED display will show current settings.
- Select your desired pumping mode:
- Stimulation Mode: Mimics how babies begin feeding with fast, light sucking. Use to initiate milk flow.
- Expression Mode: Used once let-down is initiated and milk is flowing. Can be used after Stimulation mode or straight after breastfeeding.
- Massage Mode: Use if milk flow has stopped in Expression mode to encourage additional let-downs.
- Automatic Mode: Optimizes suction from start to finish, increasing every 15 seconds.
- Adjust the suction level (9 levels available) to your comfort.
- The pump features an automatic shut-off after 20 minutes.

Figure 5: Understanding Pumping Modes.

Figure 6: Proper Placement for Discreet Pumping.
Flange Sizing
Choosing the correct breast pump flange size is crucial for both comfort and efficient milk flow. The Discreet Duo comes with a built-in 24mm flange and a 21mm flange insert. Use the included sizing guide to determine your perfect fit. Correct fit directly impacts suction effectiveness and overall pumping experience.

Figure 7: Flange Sizes for Optimal Fit.
Charging
The pump's battery provides up to 100 minutes of pumping time on a single charge. To charge, connect the included USB charging cable to the pump hub and a suitable power source. For best performance and battery longevity, avoid using a fast-charging block to recharge the pump.

Figure 8: Charging the Pump.
Cleaning and Maintenance
Proper cleaning and maintenance are essential for the performance and durability of your DiscreetDuo Wearable Breast Pump. All parts, except the pump hub, are dishwasher safe. Always follow the cleaning methods outlined in this manual. Improper cleaning or alternative methods may affect its efficiency and lifespan.
Important: Always remove the pump hub from the collection cup BEFORE emptying the milk and cleaning the parts. This prevents damage to the electronic components.

Figure 9: Proper Milk Transfer and Cleaning Preparation.
Tips for Pumping
- Follow all pump assembly and usage instructions carefully.
- After pumping, remove the hub from the collection cup BEFORE emptying the milk from the cup.
- Hold the pump and collection cups upright to prevent spills.
- Do not bend over more than 45 degrees while pumping. Bending over may cause leaks.
- For added comfort, a small amount of coconut oil can be used as a lubricant around the flange opening.
- If pumping multiple times a day, you can store the pump parts (excluding the hub) in a plastic baggie in the fridge between sessions and wash them thoroughly at the end of the day.

Figure 10: Pumping Tips for Best Experience.
Troubleshooting
If you encounter issues with your Lansinoh Discreet Duo Wearable Breast Pump, consider the following:
| Problem | Possible Cause | Solution |
|---|---|---|
| No Suction or Weak Suction |
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| Milk Leaking |
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| Pump Not Turning On |
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Specifications
| Feature | Detail |
|---|---|
| Model Number | 53751 |
| Product Dimensions | 5.6 x 6.4 x 7.2 inches; 1.9 Pounds |
| Operation Mode | Electric |
| Pumping Modes | 4 (Stimulation, Expression, Massage, Automatic) |
| Suction Levels | 9 (Hospital Strength) |
| Flange Diameters Included | 24mm (built-in) & 21mm (insert) |
| Battery Life | Up to 100 minutes |
| Noise Level | Under 45db |
| Material | Plastic (BPS and BPA free) |
| System Type | Closed System (prevents backflow) |
Important Safety Information
Please read and understand all safety warnings and instructions before using this product. 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.
Always consult with a healthcare professional for any health concerns or before starting any new health regimen.
Warranty and Support
Lansinoh is committed to providing high-quality products. For information regarding product warranty, technical support, or to purchase replacement parts, please visit the official Lansinoh website or contact their customer service. Contact details can typically be found on the product packaging or the brand's official website.
For nearly 40 years, new mothers have trusted Lansinoh to support and care for them while they enter the messy magic of motherhood. Lansinoh proudly stands with mothers all over the world.
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