KQLKJ KQ-38-G 350ml Portable Mini Humidifier: Is It the Best Travel Companion in 2026?
A pocket-sized travel humidifier that adds moisture right at your desk or in your car, but its tiny 350ml tank and 7 sq ft coverage cannot handle room-level humidification.
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Key Specifications
Best For
How this humidifier scores for different use cases
The 350ml compact design, USB power, lightweight build, and small footprint make it ideal for travel, hotel rooms, and car use. It fits easily in a bag or suitcase.
This product excels as a desktop humidifier with its compact size, USB power, quiet 25dB operation, and two mist modes. The small tank fits a partial workday before needing a refill.
The 350ml tank provides only a few hours of runtime, requiring frequent refills overnight. The 25dB noise level and auto shut-off are good, but the tiny coverage area of 7 sq ft is insufficient for most bedrooms.
Cool mist and auto shut-off add safety, but the 7 sq ft coverage and tiny 350ml tank make it impractical for continuous nursery use. No BPA-free certification or night light is listed.
At 7 sq ft coverage and 350ml capacity, this humidifier cannot serve any large room. It is designed strictly for personal, close-range use.
No WiFi, no app control, no voice assistant integration, and no remote control. This is a simple one-button device with zero smart features.
Our Verdict
The KQLKJ 350ml humidifier is a travel-first device. It works best within arm's reach on a desk, in a car, or in a hotel room.
At 7 square feet of coverage, it cannot humidify a bedroom or nursery. Think of it as a personal mist machine, not a room humidifier.
The 25dB noise level is a real strength. You will barely hear it running next to you while you work or sleep.
USB power means you can plug it into a laptop, power bank, or car adapter. No wall outlet needed.
The 350ml tank is the biggest trade-off. You will refill it every few hours during continuous use.
At $21.99, you get a basic portable mister with auto shut-off and two spray modes. It does its small job well.
Skip this if you need room-level humidity. Choose it if you want moisture right at your desk or during travel.
What We Like
- Runs at only 25dB, quieter than a whisper, so it won't disturb your sleep or work
- USB powered and weighs just 10.2 oz, making it easy to pack for travel or use in your car
- Auto shut-off turns the unit off when water runs out, preventing dry burns
- Two mist modes let you choose continuous spray or intermittent spray for different needs
- Compact 5 x 5 x 8 inch size fits on any desk, nightstand, or car cup holder
What Could Be Better
- The 350ml tank is very small and needs frequent refilling, likely every 3-5 hours
- Only covers 7 square feet, far below the 200-400 sq ft range of standard humidifiers
- No timer function to schedule automatic on/off cycles
- No aromatherapy tray for essential oils, which many portable humidifiers include
- No night light feature, which most competing mini humidifiers offer
Standout Features
Full Specifications
Humidification Performance
| Coverage Area | 7 |
Noise & Comfort
| Noise Level | 25 – 25 – dB |
Physical & Dimensions
| Weight | 10.2 |
| Width | 5 |
| Depth | 5 |
| Height | 8 |
Features
Included Features
Not Included
Frequently Asked Questions
Common questions aboutPortable Mini Humidifier, KQLKJ 350ml Small Cool Mist Humidifiers, USB Personal Desktop Humidifier for Bedroom Car Office Travel with Auto Shut-Off & 2 Mist Modes (Green)
How long does the KQLKJ 350ml humidifier run on a full tank?
With a 350ml tank, expect roughly 3-5 hours on continuous mode and longer on intermittent mode (5 seconds on, 5 seconds off). You will need to refill it at least once during an 8-hour night.
Can this humidifier cover a full bedroom?
No. It covers only 7 square feet, which is a small personal zone. It works best within 1-2 feet of where you sit or sleep, not for an entire room.
How do you power this humidifier?
It uses USB power. You can plug it into a laptop, USB wall adapter, portable power bank, or car USB port. It does not come with a wall plug.
Can you use essential oils in this humidifier?
No. This model does not have an aromatherapy tray or essential oil compartment. Adding oils directly to the water tank can damage the ultrasonic mechanism.
Is this humidifier safe to use around children?
It produces cool mist only, so there is no burn risk from hot water or steam. It also has auto shut-off when the tank is empty. However, no BPA-free certification is listed in the specifications.
Best For
How this humidifier scores for different use cases
The 350ml compact design, USB power, lightweight build, and small footprint make it ideal for travel, hotel rooms, and car use. It fits easily in a bag or suitcase.
This product excels as a desktop humidifier with its compact size, USB power, quiet 25dB operation, and two mist modes. The small tank fits a partial workday before needing a refill.
The 350ml tank provides only a few hours of runtime, requiring frequent refills overnight. The 25dB noise level and auto shut-off are good, but the tiny coverage area of 7 sq ft is insufficient for most bedrooms.
Cool mist and auto shut-off add safety, but the 7 sq ft coverage and tiny 350ml tank make it impractical for continuous nursery use. No BPA-free certification or night light is listed.
At 7 sq ft coverage and 350ml capacity, this humidifier cannot serve any large room. It is designed strictly for personal, close-range use.
No WiFi, no app control, no voice assistant integration, and no remote control. This is a simple one-button device with zero smart features.
Scores
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Tags
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