Features: Unique and stylish structure. Small and exquisite. Easy to carry. 3 level of adjustable wind control intelligent control, simple operation. Stable, durable and reliable. Power in two ways: 18650 lithium-ion battery or USB DC 5 v. usb output dc 5 v for charging devices such as mobile phone. High efficiency and low consumption, energy saving and environmental protection. Technical specifications: Output Power: 4.5 W (max) Input voltage: 5 v dc 1a Output voltage: 5 v dc 1a Charging time: ca. 5 hr Color: black, white, red rose (optional) Item size: 10.6 * 4.2 * 14 cm / 4.17 * 1.65 * 5.51in (L * W * H) Weight: 155g / 5:49 oz Package Size: 14.5 * 12.5 * 7 cm / 5.70 * 4.92 * 2.75in (L * W * H) Package weight: 242g / 8:55 oz Package List: 1 × mini fan 1 × USB Cable