{"product_id":"4l-large-capacity-usb-humidifier-essential-oil-diffuser-night-light","title":"4L USB Humidifier \u0026 Essential Oil Diffuser with Night Light","description":"\n\u003ch2\u003eBreathe Better, Live Fresher — The 4L USB Humidifier \u0026amp; Aromatherapy Diffuser\u003c\/h2\u003e\n\u003cp\u003eUpgrade your home environment with this elegant \u003cstrong\u003e4-Liter Large Capacity USB Humidifier\u003c\/strong\u003e, combining ultra-quiet mist humidification, a built-in ambient night light, and essential oil diffuser functionality all in one stylish columnar unit. Perfect for bedrooms, living rooms, home offices, and nurseries — covering up to 40 square meters.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eThis product is intended for home comfort and aromatherapy use only. It is not a medical device and is not intended to diagnose, treat, cure, or prevent any disease or health condition.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eWhy You'll Love It\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLarge 2.6–4L Water Tank\u003c\/strong\u003e — Long-lasting moisture output for continuous all-day or overnight use without constant refills.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual Mist Nozzles\u003c\/strong\u003e — Two spray outlets deliver wide, even mist coverage across large rooms up to 40 m².\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEssential Oil Compatible\u003c\/strong\u003e — Add a few drops of your favorite essential oils for a refreshing aromatherapy experience right at home.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSoothing Ambient Night Light\u003c\/strong\u003e — A warm, soft glow doubles as a calming night light — perfect for winding down in the evening.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUltra-Quiet Operation\u003c\/strong\u003e — Runs at under 36 dB, so it won't disrupt sleep, work, or conversation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUSB-Powered Convenience\u003c\/strong\u003e — Plug into any USB port, laptop, power bank, or wall adapter — no proprietary power brick needed.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlexible Mist Modes\u003c\/strong\u003e — Press once for intermittent mist, press again for continuous fogging; long-press to activate the warm ambient light.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAuto Shut-Off Protection\u003c\/strong\u003e — Built-in water shortage detection automatically powers down the unit when the tank is empty for safe, worry-free use.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCE Certified\u003c\/strong\u003e — Meets European safety standards for electrical equipment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWater Tank Capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.6 – 4.0 Liters\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCoverage Area\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e31 – 40 m²\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Supply\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUSB (5V)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRated Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e9W\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNoise Level\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 36 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMist Outlets\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 Nozzles\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHumidification Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMist Discharge (Ultrasonic)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePlastic (Injection Molded Shell)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eColors Available\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGlacier White, Retro Green\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCertification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCE\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in China\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eHow to Use\u003c\/h3\u003e\n\u003col\u003e\n  \u003cli\u003eFill the water tank with clean water (up to 4L).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Before first use, fully soak the internal cotton wick strips to allow proper mist generation.\u003c\/li\u003e\n  \u003cli\u003ePlug the USB cable into any 5V USB power source.\u003c\/li\u003e\n  \u003cli\u003eLong-press the switch to turn on the ambient warm light.\u003c\/li\u003e\n  \u003cli\u003ePress once for intermittent mist; press again for continuous mist output.\u003c\/li\u003e\n  \u003cli\u003eOptionally, add a few drops of your preferred essential oil for aromatherapy.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003ePair It With Your Wellness Routine\u003c\/h3\u003e\n\u003cp\u003eEnhance your space further with these popular accessories from our store:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/everything-is-figureoutable-sage-green-quote-canvas-wall-art\"\u003e\"Everything Is Figureoutable\" Sage Green Quote Canvas Wall Art\u003c\/a\u003e — Complete your serene home ambiance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/better-days-are-coming-motivational-canvas-wall-art-print\"\u003e\"Better Days Are Coming\" Motivational Canvas Wall Art Print\u003c\/a\u003e — Uplift your space with positive energy.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eLearn More About Indoor Air Quality\u003c\/h3\u003e\n\u003cp\u003eMaintaining optimal indoor humidity levels can contribute to a more comfortable living environment. Learn more from the \u003ca href=\"https:\/\/www.epa.gov\/indoor-air-quality-iaq\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eU.S. Environmental Protection Agency's Indoor Air Quality resource\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: How large of a room can this USB humidifier cover?\u003c\/h4\u003e\n\u003cp\u003eA: This 4L large capacity humidifier is designed to effectively humidify spaces of 31–40 square meters, making it suitable for most bedrooms, living rooms, and home offices.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can I use essential oils in this humidifier diffuser?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! This unit is essential oil compatible. Simply add a few drops of your preferred essential oil to the water tank for a gentle aromatherapy diffuser experience alongside the humidification function.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is there an automatic shut-off if the water runs out?\u003c\/h4\u003e\n\u003cp\u003eA: Absolutely. The humidifier features built-in water shortage auto-shut-off protection. When the tank is empty, the device automatically powers down to prevent overheating or damage.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What power source does this humidifier require?\u003c\/h4\u003e\n\u003cp\u003eA: It is USB-powered (5V), so you can connect it to any standard USB wall adapter, laptop USB port, or power bank — no dedicated power supply needed.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How loud is this humidifier during operation?\u003c\/h4\u003e\n\u003cp\u003eA: This humidifier operates at under 36 dB — quieter than a whisper — making it ideal for use during sleep, work, or study without disturbance.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"How large of a room can this USB humidifier cover?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This 4L large capacity humidifier is designed to effectively humidify spaces of 31–40 square meters, making it suitable for most bedrooms, living rooms, and home offices.\"}}, {\"@type\": \"Question\", \"name\": \"Can I use essential oils in this humidifier diffuser?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes! 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