4L USB Humidifier & Essential Oil Diffuser with Night Light

Breathe Easier with the 4L Large Capacity USB Humidifier & Aromatherapy Diffuser

Transform your home environment with this elegant 4-liter USB humidifier featuring dual mist nozzles, a built-in ambient night light, and essential oil diffuser compatibility. Whether you're working from home, sleeping, or simply relaxing, this ultra-quiet humidifier keeps your space comfortably moisturized while doubling as a soothing aromatherapy diffuser.

This product is not intended to diagnose, treat, cure, or prevent any disease. These statements have not been evaluated by the Food and Drug Administration.

Why You'll Love It

• Large 2.6–4L Water Tank: Covers up to 31–40 square meters — ideal for bedrooms, living rooms, and offices without constant refilling.
• Dual Mist Nozzles: Two fog outlets for wider, more even mist distribution throughout your space.
• Essential Oil Compatible: Add a few drops of your favorite essential oil for a calming, aromatic atmosphere.
• Soft Ambient Night Light: Long-press the power switch to activate a warm, gentle glow — perfect as a nightlight or mood enhancer.
• Flexible Misting Modes: Single press for intermittent mist; press again for continuous mist — full control at your fingertips.
• Ultra-Quiet Operation: Runs at under 36dB, so you can sleep, work, or concentrate without distraction.
• USB Powered: Conveniently powered via USB (5V, 9W) — plug into any USB adapter, laptop, or power bank.
• Auto Shut-Off Safety Protection: Automatically powers off when the water level is low, protecting the device and giving you peace of mind.
• Sleek Columnar Design: Available in Glacier White and Retro Green — a stylish addition to any room's décor.

Specifications

• Capacity: 2.6 – 4.0 Liters
• Coverage Area: 31–40 sq. meters
• Power: 9W
• Voltage: 5V (USB)
• Noise Level: <36dB
• Humidification Method: Mist Discharge
• Material: BPA-free Plastic (Injection Molded)
• Mist Outlets: 2
• Colors: Glacier White, Retro Green
• Certification: CE Certified
• Country of Origin: Made in Mainland China

How to Use

1. Fill the water tank with clean water (up to 4L).
2. Fully soak the internal cotton wicks before first use to ensure proper mist output.
3. Connect via USB cable to your preferred power source.
4. Long-press the switch to activate the warm ambient light.
5. Single press for intermittent mist; press again for continuous mist.
6. Add a few drops of your favorite essential oil for aromatherapy.

Pair It With

• Motivational Canvas Wall Art – Elevate your home ambiance
• Sage Green Quote Canvas Wall Art – Complement your relaxation space

For more information on how indoor humidity affects your well-being, visit the EPA's Indoor Air Quality resource on relative humidity.

Learn more: Humidifier

Frequently Asked Questions

Q: Can I use essential oils directly in the 4L USB humidifier?

A: Yes! This humidifier is compatible with essential oils. Simply add a few drops to the water tank or designated oil tray to enjoy a gentle aromatic mist throughout your room.

Q: How long does the water tank last on a full fill?

A: With a 2.6–4L capacity, the humidifier can run for several hours on a full tank depending on the mist mode selected. Continuous mist mode will use water faster than intermittent mode.

Q: Is it safe to leave running overnight?

A: Yes. The built-in automatic shut-off feature powers the unit down when water runs low, making it safe for extended use including overnight operation. The quiet under-36dB operation also ensures it won't disturb your sleep.

Q: What power source does this humidifier use?

A: It is USB-powered at 5V/9W, meaning you can plug it into any USB wall adapter, laptop, computer, or compatible power bank for versatile placement anywhere in your home.

Q: Do I need to do anything before the first use?

A: Yes — it's important to fully soak the cotton wicks inside the unit before the first use. This ensures proper mist output from the start and helps the device perform optimally.