[Small Size Adjustable Angle] - In order to break the shortcomings of traditional humidifiers, air humidifier supports adjustable spray angle of 180 degrees. This makes the spray area larger and helps the small water molecules to hydrate the skin more deeply. This portable humidifier is small in size (7.25 inches * 2.8 inches), making it ideal for cars, desks or small bedrooms. 2 replacement cotton swabs are included in the package. [USB or Battery Powered] - Our portable cool mist humidifier is powered by a rechargeable battery. You can enjoy humidification wirelessly or powered from any USB port. Take this mini humidifier with you everywhere This lovely humidifier can run for up to 4 hours on a single charge. [Two spray modes and timer off] - This personal humidifier has two spray modes: continuous and intermittent mode. When using it for the first time, soak the cotton wick for a few minutes. In continuous mode, the cool mist humidifier will automatically turn off after 4 hours. In intermittent mode, the humidifier will automatically turn off after 8 hours, effectively preventing dry burning accidents. [Silent Running & Color Riding Night Light] - Silent operation, less than 30dB, make you sleep tighter in a quiet environment. There are 3 night light modes - color bike, 7 colors that change automatically and fix on a specific color. This lovely humidifier creates a peaceful atmosphere while offering a soothing spray. You can enjoy maximum relaxation and improve your sleep quality. [The last humidifier you'll ever need ]- Elegant Portable Rechargeable Adjustable angle Night light --- Does not support essential oils. Feel free to email us with any questions.