Hands free design: just hang the fan around your neck and enjoy the cool breeze (adjustable safety leash included). It won't swing back and forth and so won't cause neck pain when walking. 3000mAh Rechargeable Battery: It can be powered and charged by all 5V USB devices (e.g. power banks, computers, etc.). Once the battery is fully charged, it can be used for 4-22 hours. 3 Adjustable Speeds: Low / Medium / High speed settings meet your different wind speed needs. The highest wind speed blows air at 5.9 M / S! 90-degree rotation: The necklace fan can be adjusted 90 degrees up or down depending on its size or position. Compact and portable: just put it in a bag and take it with you. Use it anytime anywhere. An excellent choice for outdoor activities and travel! Product descriptions Color Name: Pink, 3000 Mah Perfect cooling for on the go! Stay cool everywhere on hot summer days. Perfect for the amusement park, watching outdoor sports, outdoor concerts, walking on campus, meeting, traveling, hiking, backpacking, or picnicking. Simply hang around your neck to take away Only 122 g, lighter than a phone. Wearing it will not cause neck pain. Especially for people who travel a lot. Keep calm when you have it around your neck. Do not swing back and forth while walking. Highlights - Hands-free cooling with a strong vertical air flow - Compact and portable - Light design, including adjustable safety leash - With a USB charging cable, the fan can be supplied with power and charged by all 5V USB devices (such as power banks, computers, etc.). - Battery life: 3-15 hours