USB Ultrasonic Humidifier - Car, Travel and Office - Super Strong Cool Mist Diffuser - Mini Portable with Quiet Operation - No Built-in Canister Limitations PERFECT for CAR and TRAVEL: PORTABLE - USB powered - use anywhere USB power ports are available. Never be limited by built-in canisters or tanks that never fits your car. You provide the water supply in a cup or a bottle. For wter PREVENT DRYNESS, ALLERGIES, and RELIEVES COLD & FLU SYMPTOMS. Cool mist and whisper-quiet operation. New ultrasonic technology. VARIABILITY: for Travel, Car, Home, Yoga, Office, Spa, Bedroom, Baby Room. Use anytime, anywhere: while sleeping, in hotels, in the nursery, while travelling on flights, on buses, or on trains, at work in the cubicle or the home office. Use anywhere suitable at-home or on-the-go. Perfect gift. SUPER EASY TO USE: just drop the humidifier into a water source and power it on with any USB port. CONTENTS: USB powered DC 5V; USB cord length: 38 inches; Size: 1.6x1.6x5.1 inches; Weight: 1.3 oz.