Come and see our amazing products. Create some breathing room with these USB humidifiers and oil diffusers. Made of ABS and PP plastics, this 4" device has a round design with a flat base you can use almost anywhere. It's easy to operate, just lift the cover, soak the included sponge for 3 to 5 minutes, fill the reservoir with water or essential oils, insert the power cable and you're ready to relax. Select from seven LED colors to match your mood or decor. Natural wood tone. Add your school, sports team, organizational or company logo or message to customize. Orders over 3000 units eligible for sea shipping. Pls confirm with us about the packing info, stock color and exact production time before placing your order.