4L Cool-Mist USB Humidifier with Aroma Function | Portable 5V
4L Cool-Mist USB Humidifier with Aroma Function | Portable 5V
4L Cool-Mist Humidifier with Aroma Diffuser Function
Transform the air quality in your home, office, or hotel room with this whisper-quiet 4L Cool-Mist Impeller Humidifier. Powered via a convenient USB 5V connection, it runs on just 1W of energy, making it one of the most efficient ways to maintain comfortable indoor humidity levels throughout the day and night.
The built-in aroma function lets you add your favourite essential oils to the water tank, filling your space with a gentle, refreshing fragrance as cool mist circulates through the room. Whether placed on a desk, bedside table, or countertop, its compact tabletop design and lightweight 1.4 kg body make it easy to reposition wherever you need it most.
Key Features
- 4L Water Tank – Long-lasting hydration for continuous use without constant refills
- Cool-Mist Impeller Technology – Delivers a steady 220 mL/hr mist output for balanced humidity
- Ultra-Quiet Operation – Runs at under 36 dB so it won't disturb sleep or work
- USB 5V Powered (1W) – Plug into any USB port, power bank, or adapter for flexible placement
- Aroma Diffuser Compatible – Add a few drops of essential oil for a calming, fragrant atmosphere
- Humidistat Control – Built-in humidity sensing keeps levels consistent automatically
- Portable Tabletop Design – Compact 180 × 318 mm footprint fits on desks, nightstands, and shelves
- Durable ABS Plastic Construction – Lightweight yet sturdy for everyday use at home or on the go
- 1-Year Manufacturer's Warranty – Backed by a full year of after-sales support including free spare parts
Specifications
| Water Tank Capacity | 4 L |
| Mist Output | 220 mL/hr |
| Power | 1 W |
| Input Voltage | 5V USB |
| Humidification Method | Cool-Mist Impeller |
| Noise Level | <36 dB |
| Dimensions | 180 × 318 mm |
| Weight | 1.4 kg |
| Material | ABS Plastic |
| Model | BJS-40D01 |
| Warranty | 1 Year |
| Country of Origin | Made in China (Zhejiang) |
Perfect For
Bedrooms, living rooms, home offices, hotel rooms, and small commercial spaces. Use it alongside your favourite essential oils for an enhanced wellness routine. Pair it with a relaxing diffuser blend and explore our Ancient Nutrition Multi Collagen Advanced Muscle 60 Capsules for a holistic home wellness setup. If you enjoy creating a cosy ambience, also check out our curated Women's Loose Turtleneck Knit Pullover Sweater — perfect for unwinding at home in comfort.
Learn more: NIH on aromatherapy and essential oils
Frequently Asked Questions
Q: How long does the 4L water tank last on a single fill?
A: At the standard mist output of 220 mL/hr, the 4L tank provides approximately 18 hours of continuous operation, making it ideal for overnight or all-day use without frequent refills.
Q: Can I use essential oils in this humidifier?
A: Yes! This humidifier features a built-in aroma function — simply add a few drops of your preferred essential oil to the water tank to enjoy a lightly scented, cool mist throughout your room.
Q: How does this humidifier connect to power?
A: It runs on a standard 5V USB connection and consumes only 1W of power. You can plug it into a USB wall adapter, laptop port, or portable power bank for versatile, cord-friendly placement in any room or space.
Q: Is this humidifier suitable for use in a car?
A: Yes — its compact portable design and USB power source make it easy to use in a car with a USB car adapter, keeping the cabin air comfortably moisturised during longer journeys.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.