I turned it on once to check its operation. The box is dirty. The power adapter has not been used. A bladeless fan equipped with a 900mAh battery, compact and convenient to carry. - Battery capacity: 900mAh - Power consumption: 1.2W - Interface type: Type-C 【Ultra-lightweight design that you can hold with one hand】It weighs only 0.16kg, the same as one apple, making it lightweight. It's easy to attach to belts or jeans, providing a comfortable cool breeze to your lower back even during commutes or walks. 【Three-stage wind speed adjustment to meet the needs of the workplace】With three stages: "gentle breeze," "standard," and "strong wind," it can be used in a wide range of situations, from the high-temperature environment of a kitchen to after gym training. It features a wind volume that quickly dries sweaty shirts on your back. 【360-degree freely adjustable swivel function】The swivel axis rotates flexibly in all directions. It delivers a reliable breeze to the necessary areas, from ground work during gardening to high-altitude work.