Note: The cotton swab must be placed in water and fully immersed each time, otherwise it may not work properly. Mini Air Humidifier Aroma Oil Diffuser. 300ml water tank. With Colorful Night Light. 2 spray modes adjustable, once press for constant spray, twice for interval spray.sccjgl 5V 1A micro USB powered, compatible with any device with USB port like laptop, desktop, power bank, socket, power outlet. Aumomtic power off function,4 hours scheduled shutdown time for constant spray, 6 hours for interval spray. Small and lightweight, perfect for home bedroom, office in 20-30 square meters, or portable for car, travel. Specification: Rated input: DC5.0V / 1.0A Working current: 250-350mA Rated power: 1W Water tank capacity: 300ml Spray volume: 25-35ml / h Scheduled shutdown time: 4 hours/6hours Size: 78x119mm/3.07x4.68inch Material: ABS/PP/Electronic components Package Includes: 1 Piece Aroma Humidifier 1 Piece USB Cable 1 Piece User Manual 1 Piece Cotton Swab