1. Introduction & Overview
The KISSBOBO K5 Electric Breast Pump is a hands-free, portable device designed to assist mothers with breast milk expression. It features 4 distinct modes and 19 adjustable suction levels, providing a customizable and comfortable pumping experience. With a strong suction of up to 280mmHg, it aims for efficient milk extraction while ensuring comfort and safety.

2. Important Safety Information
Please read all instructions carefully before using the KISSBOBO K5 Electric Breast Pump. Keep this manual for future reference.
- Do not immerse the motor unit in water or other liquids.
- Ensure all parts are clean and completely dry before assembly and use to prevent contamination.
- This product is made from BPA-free, food-grade silicone and plastic materials, ensuring safety for both mother and baby.
- Consult a healthcare professional or lactation consultant if you experience persistent pain or discomfort during pumping.
- Keep the device out of reach of children.
- Use only the provided USB charging cable.
3. Product Components
The KISSBOBO K5 Electric Breast Pump package includes the following components:
- Motor Unit
- Milk Collector Cup (150ml capacity)
- Silicone Flange (27mm, with various size inserts)
- Silicone Diaphragm
- Duckbill Valve
- USB Charging Cable

4. Assembly & Setup
4.1 Initial Cleaning and Charging
Before first use, clean and sterilize all parts that come into contact with breast milk (milk collector cup, silicone flange, diaphragm, and valve) as described in the "Cleaning & Maintenance" section. Ensure they are completely dry.
Charge the motor unit fully before initial use. Connect the USB cable to the charging port on the motor unit and to a suitable power source. The indicator light will show charging status. A full charge typically takes approximately 2 hours.
4.2 Flange Size Selection
Proper flange size is crucial for comfortable and efficient milk expression. The K5 comes with a 27mm flange opening and includes various size inserts to help you find the best fit. Refer to the guide below to determine your correct size.

4.3 Assembly Steps
- Insert the silicone diaphragm into the milk collector cup, ensuring it forms a tight seal around the edges.
- Attach the duckbill valve firmly to the bottom of the diaphragm.
- Place the selected silicone flange (with appropriate insert if needed) securely into the collector cup.
- Connect the motor unit to the top of the assembled collector cup, ensuring it clicks into place and is securely attached.
5. Operating Instructions
5.1 Power On/Off
To turn the pump ON, press and hold the power button until the display illuminates. To turn the pump OFF, press and hold the power button again.
5.2 Modes and Levels
The KISSBOBO K5 offers 4 distinct modes and 19 adjustable suction levels for a personalized and comfortable pumping experience. Use the '+' and '-' buttons to adjust suction intensity within each mode.

- Massage Mode: Stimulates the breast with a gentle, rapid rhythm to encourage milk let-down. This mode is ideal for use before expression to prepare the breast.
- Let-down Mode: Mimics a baby's natural sucking rhythm to promote a steady milk flow. Use this mode for 2-3 minutes after massage mode until milk flow becomes regular.
- Expression Mode: This is the main extraction phase, providing deeper and stable suction for efficient milk removal. Use this mode for approximately 10-15 minutes per breast once milk flow is established, adjusting to your comfort.
- Automatic Mode: Alternates automatically between Massage, Let-down, and Expression modes for an intelligent, simplified pumping experience. This mode starts at level 6 by default and is not recommended for first-time users.
5.3 Pumping Session Guidelines
- Apply a warm compress to the breast a few minutes before pumping to help relax the breast and encourage milk flow.
- Gently massage the breast to stimulate milk production and reduce discomfort.
- Begin your session in Massage Mode for 2-3 minutes to initiate let-down.
- Once milk begins to flow, switch to Expression Mode, pumping for 10-15 minutes per breast or as comfortable.
- If milk flow slows during expression, alternate between Massage Mode and Expression Mode to improve flow and efficiency.
5.4 Automatic Shut-off
The KISSBOBO K5 is equipped with an automatic shut-off feature. The pump will automatically stop after 20 minutes of continuous operation. This feature helps prevent discomfort from prolonged pumping and conserves battery life.

6. Cleaning & Maintenance
Regular and thorough cleaning is essential to maintain hygiene, ensure optimal performance, and prolong the lifespan of your KISSBOBO K5 Electric Breast Pump.
6.1 Disassembly for Cleaning
After each use, carefully separate all components that come into contact with breast milk: the milk collector cup, silicone flange, diaphragm, and duckbill valve.
6.2 Cleaning Instructions
- Washable Parts: Immediately after each use, wash all disassembled parts (milk collector cup, silicone flange, diaphragm, and valve) with warm soapy water. Use a soft brush if necessary to remove any milk residue. Rinse thoroughly with clean water.
- Motor Unit: The motor unit should NOT be immersed in water. Wipe its surface with a clean, dry, or slightly damp cloth.
6.3 Sterilization
All washable parts (excluding the motor unit) can be sterilized. You can boil them in water for no more than 100°C (212°F). Ensure that the parts do not touch the bottom or sides of the pot to prevent damage.
6.4 Drying & Storage
Allow all cleaned and sterilized parts to air dry completely before reassembling or storing. Store the pump in a clean, dry place away from direct sunlight and extreme temperatures.

7. Troubleshooting
If you encounter any issues with your KISSBOBO K5 Electric Breast Pump, please refer to the following table for common problems and their solutions:
| Issue | Possible Cause | Solution |
|---|---|---|
| Pump does not turn on / No power. | Battery is depleted. | Ensure the battery is fully charged. Connect the pump to a power source using the USB cable. |
| Low or no suction. |
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| Milk leakage. |
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| Short battery life. |
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8. Product Specifications
| Feature | Specification |
|---|---|
| Model Number | K5 |
| Suction Power | Up to 280mmHg |
| Modes | 4 (Massage, Let-down, Expression, Automatic) |
| Suction Levels | 19 per mode |
| Material | Food-grade Plastic, Silicone (BPA-free) |
| Noise Level | 40 Decibels |
| Battery Type | Rechargeable (via USB) |
| Charging Time | Approx. 2 hours |
| Usage Time per Charge | Approx. 4-5 sessions or 140 minutes |
| Milk Collector Cup Capacity | 150 ml |
| Product Dimensions (approx.) | 7 cm (width) x 13 cm (height) |
| Country of Origin | China |
9. Warranty & Support
9.1 Warranty Information
KISSBOBO offers a one-year free return service for the K5 Electric Breast Pump from the date of purchase. This warranty covers manufacturing defects and ensures peace of mind for your breastfeeding journey. Please retain your proof of purchase for warranty claims.
9.2 Customer Support
For any questions, concerns, technical support, or warranty claims, please contact KISSBOBO customer service. You can typically reach support through the retailer where the product was purchased or by visiting the official KISSBOBO brand store online: