2400mAh Large Capacity Battery: Provides you powerful wind, 3 levels of speed adjustment function allows you to choose your favorite wind speed, 1st gear can work for 6-7 hours, 2nd gear lasts 3 at 4 o'clock, and the 3rd gear lasts for 2 hours. Rotable to adjust the wind direction angle: The portable fan has two rotating air heads, you can feel more air flow powerful, adjustable design, so you can adjust to different directions, portable USB neck fan, commutes; work and outdoor activities. ideal choice. Cool and safe: upgraded neck fan, innovative turbo fan blades and blower design, efficient air division and softer cool breeze feeling, neck fan design bladeless can be used safely by children and the elderly. Using USB charging and brushless motor: portable fan, easy to charge the fan's USB interface via chargers mobile phone, laptops and other devices, built-in pure copper brushless motor, will produce more powerful airflow with lower sound, and will not be disturbed. by noise. Light weight: The shell of the mini portable personal neck fan uses ABS material, which is safe and environmentally friendly, the weight of the portable neck fan is only 278g, and the comfortable neck strap design will not cause much burden after a long time.