Features: [ Air Cooler]: The compact personal air cooler was designed with refrigeration, humidification and air purification function which allows you to create a personal . [Adjustable Air Outlet]: The tuyere is 80° lower and 120° higher, and the left and right tuyere can adjust the angle to the wind. Different angles can meet your needs. [Usb or Battery Powered]: It can be Powered through USB or Battery Powered, which is convenient to take it to any place, Simply fill with water, plug it into USB port or Install the battery. Colour: Black [Safe Use]: The USB interface has a safety switch. The battery is automatically powered off after USB power is supplied. Effectively prevent accidents caused by batteries. [Portable Carrying]: The small size(140 x 110 x 105 mm) and light weight (about 0.41kg),easy for carrying and moving from your office to your home and so on. [Shelving tank]: The fragrance can be placed inside, and the can also be placed inside. Product Details: Product size: 140 x 110 x 105 mm (L x W x H) Product material: ABS Product weight: 816g Rated voltage: 2.5W Power supply mode: computer USB interface / 3 batteries (need to prepare yourself) Package Contents: 2 x Air Cooler 2 x USB Power Cable 2 x Fragrant beads Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.