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Choosing between Momcozy W1 and M9 is one key consideration in ensuring your pumping experience goes as smoothly as possible. In pointing out and commenting on the distinction between Momcozy W1 and M9, however, the fact has been made clear: both devices offer something fresh and exciting to their markets. In the process, though, it is crucial to assess all the features of both devices to determine the right one for your use in relation to your lactation requirements.
Premium Features
The primary distinction between these two models lies in their approach to pumping optimization: digital intelligence versus physical comfort.
Momcozy M9: Smart App Control
The M9 is built for total control and discretion. It features a robust smart app control feature that syncs the pump with your smartphone via Bluetooth.
- Discreet Control: You can adjust suction levels and modes directly from the Momcozy app, ensuring privacy in public or at work without reaching into your bra.
- Pumping Settings Adjustment: The app allows you to easily switch between settings to find the perfect balance of comfort and efficiency.
- Milk Volume Tracking: It serves as a digital logbook, allowing you to record and monitor milk expression amounts per session to track your supply progress.
- Personal Alerts: You can set personalized notifications to stay on top of your pumping schedule.
Momcozy W1: Warm Massage Wellness
The W1 moves away from app connectivity to focus on physical "Wellness." While it has no app control, it introduces industry-first warm massage modes designed to mimic natural breastfeeding cues.
Optimal Warmth: The W1 offers three warmth levels designed to relax milk ducts and encourage flow:
- 37°C: Similar to body heat for natural comfort.
- 39°C: A "gentle spa" warmth to help you unwind.
- 41°C: Similar to a warm towel compress, ideal for encouraging relief from engorgement.
Rhythmic Massage: It features simulated expert techniques with three adjustable gentle massage levels. The massage function automatically stops after 5 minutes to prevent overstimulation, ensuring a gentle experience.
Pump Design
Overall Design: Both pumps share a sleek, ergonomic aesthetic but differ significantly in their construction and variety.
M9 is available in two color variants. It is streamlined, consisting of only 5 parts (plus a USB cable and flange cover), which simplifies assembly. It features a distinct tear-drop shape with dimensions of 127mm x 109mm x 77mm.
W1 is available in one color and features Momcozy's signature patented transparent top design, allowing you to easily align placement and see milk flow at a glance. The W1 is slightly more complex due to its advanced features, consisting of 6 parts: motor, flange, diaphragm, valve, milk collector, and a milk collector back cover. Like the M9, it maintains the distinct tear-drop shape for a discreet fit, while the transparent design provides enhanced visibility and control during pumping sessions.
Both the Momcozy Air 1 (which shares design DNA with the W1) and M9 milk collectors feature a flat base for stability.
Flange Design: Comfort and Performance
Both the M9 and W1 utilize Momcozy's patented DoubleFit™ flange technology, engineered for superior comfort and fit. Both pumps include a 24mm flange by default, along with three flange inserts (17mm, 19mm, and 21mm) to accommodate different breast sizes.
The W1's flange stands out with its integrated warm-massage elements—five vibration units and a petal-shaped warming zone, making it unique in the wearable pump market.
Milk Collector Design
M9:
- Capacity: 150ml
- Features a flat base for stable placement
- Includes a storage lid. After pumping, you can store the breast pump components directly in the milk collector for convenient storage
W1:
- Larger capacity: 180ml (6 ounces)
- Equipped with a plastic foot at the bottom, allowing you to briefly stand the pump on a table before transferring milk into bottles or storage bags
Buttons and LED Screen
The M9 features an intuitive button interface with a clear LED screen displaying pumping mode, suction level, battery status, and session timer. It also includes a toggle button to select pump direction (left or right), ideal for mothers using dual pumps who want to control each side independently.
The W1 comes with a user-friendly LED screen showing current mode, suction level, battery life, and temperature settings. Separate buttons control the warming and massage functions, making it easy to activate these wellness features independently or together during your pumping session.
Pumping Power, Modes, Patterns, and Performance
The Momcozy M9 offers three primary modes plus exclusive app-controlled patterns:
- Stimulation Mode: Quick, short sucking pattern (-67 to -172mmHg) to initiate flow.
- Expression Mode: Slow, deep sucking pattern (-105 to -300mmHg) for efficient removal.
- Mixed Mode: A combination of quick and slow patterns.
App-Exclusive Patterns:
- Milk Boost™: Designed to enhance milk production.
- Milk Relief™: Gently eases discomfort for moms with enlarged breasts.
- MyFlow™ Mode: Allows you to customize intensity and rhythm via the app for a personalized experience.
The M9 provides 15 adjustable suction levels with a maximum suction power of -300mmHg, offering precise control over your pumping intensity.
The Momcozy W1 now offers four pumping modes:
- Stimulation Mode: Quickly initiates let-down
- Expression Mode: Efficiently expresses milk
- Mix Mode: Combines short and long suckings for gentle, thorough emptying
- Milk Boost Mode: A 30-minute expert-inspired cycle that simulates natural breastfeeding patterns to help increase milk output
The widely loved Milk Boost Rhythm from the M9 is built into the W1 as a preset with a single tap, it launches a complete 30-minute session designed to enhance milk production without any complex adjustments.
The W1 provides 12 suction levels with a maximum suction power of 295mmHg, creating 48 customizable pumping patterns (4 modes × 12 levels) for a tailored pumping experience.
Power, Portability & User Experience
Both models are designed for mobile moms, but they differ in battery capacity, weight, and noise output due to their different internal mechanisms.
| Feature | Momcozy M9 | Momcozy W1 |
| Charging Port | USB Type-C (includes dust plug) | USB Cable |
| Battery Capacity | Standard | 2200 mAh (High Capacity) |
| Usage Time (Per Charge) |
Approx. 150 mins (4-5 sessions @ 30 mins) |
Up to 300 mins (9-10 sessions standard) or Approx. 180 mins (6 sessions with Warm-Massage) |
| Weight | 302g | 320g |
| Carrying Case | Included | Not Included |
| Charging Case | No | No |
| Noise Level | ≤42dB (Ultra-Quiet) | ≤50dB (Slightly louder due to massage motors) |
Key Takeaways:
- For Long Days Out: The W1 is the powerhouse. Its massive 2200 mAh battery allows for nearly double the pumping sessions in standard mode compared to the M9, making it ideal if you can't charge frequently.
- For Discreet Travel: The M9 wins on portability and discretion. It is lighter, quieter (≤42dB), and comes with a dedicated carrying case, making it easier to slip into a bag without weighing you down.
Clean and Maintenance
Proper hygiene is critical for both models. Since the W1 shares similar maintenance principles, we will use the M9 as the primary example for cleaning protocols.
General Cleaning:
- Disassemble: Separate the flange, diaphragm, valve, and milk collector.
- Rinse: Rinse all milk-contact parts under running water (warm or cold) to remove residue.
- Wash: Soak parts in warm (40-60°C) soapy water for 3-5 minutes. Use a clean brush intended only for infant feeding items to scrub them.
- Rinse Again: Rinse thoroughly under fresh running water.
- Air Dry: Place parts on a clean, unused paper towel or dish towel. Do not rub them dry to avoid transferring germs.
- Disinfect: For extra safety, boil the silicone parts (flange, valve, diaphragm) in water for 5-10 minutes, ensuring they do not touch the pot sides.
Note: The main motor unit contains electronics and should only be wiped with a disinfectant wipe or cloth; never submerge it in water.
Assembly Process
Both models have a simple assembly procedure. Once you have cleaned and dried all components thoroughly, you can follow these easy steps:
M9 Assembly:
- Assemble the diaphragm to the flange and ensure a tight seal.
- Assemble the milk collector by rotating it in the direction of the lock icon at the mouth of the collector.
- Attach the flange to the milk outlet
- Assemble the pump motor and the flange tightly
- Attach the dust cover to the breast pump tightly
Click here for more details about the assembly process of M9.
W1 Assembly:
- Attach the valve to the milk collector and ensure it is securely installed
- Assemble the milk collector, making sure the front and back covers are tightly secured
- Close the stopper on the milk collector
- Attach the diaphragm to the milk collector. First, secure the silicone and plastic parts of the diaphragm, then install it inside the back cover of the milk collector, ensuring it fits securely.
- Make sure the main unit and the flange are tightly assembled to prevent air leakage.
- Connect the milk collector assembly to the main unit, ensuring the flange or insert is the correct size and properly fitted
Price Comparison
Momcozy M9: $269.99 - It offers excellent value for mothers seeking smart app control and professional pumping patterns
Momcozy W1: $329.99 - Premium pricing reflects the innovative warm-massage technology and wellness-focused design
When to Choose Each Model
Selecting the right pump depends on your lifestyle, pumping challenges, and personal preferences. Use these guidelines to identify which model aligns with your needs.
Choose the Momcozy M9 If:
- You want precise control through smart app integration and detailed milk volume tracking
- You're balancing a career and need efficient, professional pumping patterns
- You require maximum portability with the included carrying case
- You prioritize quieter operation (≤42dB) for discreet office pumping
- You value longer pumping sessions with customizable MyFlow™ modes
Choose the Momcozy W1 If:
- You struggle with let-down or need warm compress/massage before pumping
- You experience frequent soreness, engorgement, or blocked ducts
- You want automated warm-massage technology for comfort and milk flow
- You need extended battery life (9-10 sessions on a single charge)
- You prioritize wellness and a stress-free pumping experience
Choose What Fits You
When choosing between Momcozy W1 and M9, your preferences are your biggest priority. Opt for M9 if you appreciate smart app technology, accurate tracking, and professional milk expression patterns, ideal for efficient and data-driven milk expression. Go for W1 if you are impressed with revolutionary warm massage technology, ideal for comfort and letdown issues. Both pumps come with Momcozy’s DoubleFit™ Flange along with a high-quality design. Whatever your choice is between M9 and W1, you’re getting a great companion in breastfeeding with Momcozy.
