Safe bladeless design,prevent hurting hands and convenient for cleaning. Built in 4000mAh lithium battery,fast charging for long battery endurance. suitable for environments, scientific wind guide outlet, long-distance jet , driving the surrounding air circulation, the wind is stable and not stimulating, more like natural wind The cooling fan with low noise design will not disturb you whether you are working or sleeping. Provide you with the perfect atmosphere. Our personal air conditioner is the perfect combination of mini air conditioner, table fan, air humidifier. Small space portable design, easy to move, the for bedroom, study, office, kitchen and work space. Product Name: Desktop Tower Fan Product model: M47 Battery capacity: 4000mAh Product weight: 580g Input power: 5V/1.8A Applicable scene: office, dormitory, bedroom, living room Colour:White Material:ABS Size:268x101x101mm Package Contents: 1 x Bladeless fan 1 x USB cable 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.