1. Introduction
Thank you for choosing the KASYDoFF Portable Small Humidifier H6. This manual provides essential information for the safe and efficient operation, maintenance, and troubleshooting of your device. Please read these instructions thoroughly before use and retain them for future reference.

Image: KASYDoFF Portable Small Humidifier H6 in Khaki color, emitting mist, with dimensions 5.9 inches height and 5 inches width.
2. Product Overview
2.1 Key Features
- Portable Design: Compact size (5.9*5 inches) suitable for bedrooms, nurseries, travel, cars, and offices.
- Large Capacity: 1500ml water tank for extended operation.
- Rechargeable Battery: Built-in 1800mAh battery for cordless use, or powered via USB.
- Mist Modes: Three adjustable spray modes (continuous, intermittent, alternating).
- One-Touch Control: Simple button operation for mist and night light functions.
- Auto Shut-Off: Automatically turns off after 9 hours for safety.
- Ultra-Quiet Operation: Operates at a whisper-quiet 20dB.
- Night Light: Soothing warm light feature.
- Durable Material: Made from high-quality, BPA-free PP material.
2.2 Included Components
- 1 x KASYDoFF Portable Small Humidifier H6
- 10 x Cotton Swabs (replacement wicks)
- 1 x USB Cable

Image: Included components: KASYDoFF Portable Small Humidifier, 10 cotton swabs, and a USB cable.
3. Safety Instructions
- Do NOT use essential oils, perfume, distilled water, or filtered water. These can clog the cotton swab and render the humidifier unusable. Use clean tap water only.
- Always ensure the cotton core is fully soaked for a few minutes before turning on the humidifier for the first time or after replacing the swab.
- Do not exceed the maximum water level mark inside the tank to prevent overflow and potential damage to internal components.
- Use only a standard and certified power adapter. Improper adapters may cause short circuits or fire hazards.
- Keep the USB cable away from heated surfaces.
- Point the mist away from electrical outlets and sensitive electronics.
- Keep out of reach of children and pets.
4. Setup
- Unpack: Carefully remove all components from the packaging.
- Open the Humidifier: Lift the top cover vertically to access the water tank.
- Soak Cotton Swabs: Before first use, or after replacing, ensure the cotton swabs are fully saturated with water. This is crucial for proper mist production.
- Fill Water Tank: Pour clean tap water into the tank, ensuring not to exceed the 'MAX' water level line.
- Close the Humidifier: Carefully place the top cover back onto the base, ensuring it is securely seated.
- Connect Power: Plug the provided USB cable into the humidifier's USB port and connect the other end to a compatible USB power source (e.g., wall adapter, computer USB port). The humidifier can also operate on its internal battery once charged.

Image: Diagram showing how to fill the KASYDoFF humidifier: lift top cover, pour tap water, replace cotton swab, ensure bottom spring is in place, close cover, and press button to use.
Video: This video demonstrates the setup and basic operation of the KASYDoFF Portable Mini Humidifier, including how to add water and activate mist and night light functions.
5. Operating Instructions
5.1 Power On/Off & Mist Modes
The humidifier features a single control button for all functions:
- First Press: Activates continuous dual spray mode.
- Second Press: Switches to alternating single spray mode (left nozzle then right nozzle).
- Third Press: Activates intermittent dual spray mode.
- Fourth Press: Turns off the humidifier.

Image: Diagram illustrating the three spray patterns of the KASYDoFF humidifier: dual spray, alternating single spray, and intermittent dual spray, controlled by successive button presses.
5.2 Night Light Function
- Long Press (3 seconds): Turns the night light on or off. The night light operates independently of the mist function.

Image: KASYDoFF Portable Small Humidifier H6 with its night light on, providing a soothing ambiance in a bedroom setting with a sleeping baby.

Image: KASYDoFF humidifier with ambient yellow lighting, creating a peaceful atmosphere.
6. Maintenance
6.1 Cleaning the Water Tank
Regular cleaning is essential to prevent mineral buildup and maintain optimal performance:
- Unplug the humidifier and empty any remaining water.
- Wipe the inside of the water tank with a soft, damp cloth.
- For stubborn mineral deposits, use a mild descaling solution (e.g., white vinegar diluted with water) and let it soak for 15-30 minutes before rinsing thoroughly.
- Do not immerse the main unit in water.
6.2 Replacing Cotton Swabs
The cotton swabs (wicks) should be replaced regularly (e.g., every 1-3 months, depending on usage and water quality) to ensure efficient mist production.
- Lift the top cover of the humidifier.
- Gently pull out the plastic tube assembly containing the old cotton swab.
- Remove the old cotton swab and replace it with a new one, ensuring the small spring at the bottom of the tube is in place.
- Insert the plastic tube assembly back into the top cover.
- Soak the new cotton swab in water for a few minutes before operating the humidifier.

Image: Diagram showing steps to replace the cotton swab in the KASYDoFF humidifier: lift cover, remove swab, pour water, replace swab, ensure spring, close cover, and power on.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No mist or weak mist | Cotton swab not fully soaked or clogged; insufficient water; unit not powered on. | Ensure cotton swab is fully saturated. Refill water tank. Press power button to turn on. Replace cotton swab if clogged. |
| Humidifier leaks water | Water level too high; top cover not properly sealed. | Do not exceed MAX water line. Ensure top cover is securely placed. |
| Night light not working | Light function is off. | Long press the control button for 3 seconds to turn the night light on. |
| Humidifier turns off unexpectedly | Water tank is empty; 9-hour auto shut-off activated. | Refill water tank. This is a safety feature; restart if needed. |
8. Specifications
| Feature | Detail |
|---|---|
| Brand | KASYDoFF |
| Model Name | H6 |
| Color | Khaki |
| Product Dimensions | 5"D x 5"W x 5.9"H |
| Item Weight | 9.6 ounces |
| Capacity | 1500 Milliliters |
| Operation Mode | Evaporative |
| Special Features | Auto Shut Off, Night Light, Quiet, Removable Tank |
| Voltage | 5 Volts |
| Wattage | 4 watts |
| Battery | 1 A battery required (included) |
| Room Type | Bedroom, Kids Room, Living Room, Office, Study Room |
9. Warranty and Support
KASYDoFF offers a 1-year free service period for quality-related issues from the date of purchase. If you encounter any problems with the product within this period, please contact KASYDoFF customer support. We are committed to assisting you in resolving any issues.
For further assistance or inquiries, please visit the official KASYDoFF store on Amazon: KASYDoFF Store