Mini Humidifier / USB Humidifier Portable Design Cool Mist Humidifier No Noise Automatic Shut-off Compatible with Coca Cola Evian Bottles for Office & Bedroom (Black) PORTABLE DESIGN --- This cool mist humidifier is small and light weight. Perfect for travel use. USB PORT --- Work with any USB device: computer, power bank, or even in your car, convenient to use. BOTTLE DESIGN --- With just a plastic bottle, it can work perfectly. HELPFUL TO YOUR HEALTH---This humidifier provides relief for cold, nasal congestion and dry skin. NO NOISE --- Very calm and quite personal humidifier. It's a very good gift for any occasion.