Neck Fan Life5 can be used as a handheld/waist-mounted/neck-mounted/wearable fan. It's designed to meet your various cooling needs both indoors and outdoors. Whether you're at work or out and about, it frees your hands, allowing you to easily stay cool in hot weather.This portable neck fan features a high-performance motor that delivers a powerful airflow of up to 8.5 m/s and a speed of up to 40,000 rpm. It has 100 adjustable wind speeds, allowing you to freely switch between a gentle breeze and a strong wind for an ultimate cooling experience! It has a built-in 4500mAh battery, providing up to 16 hours of runtime at the lowest wind speed and up to 3 hours at the highest wind speed. It fully charges in just 3-4 hours. The LED display shows the wind speed setting and remaining battery power in real time, so you don't have to worry about the battery suddenly running out. Weighing only 6.17 ounces (approximately 175 grams), this mini fan is easy to wear and comfortable, making it the ideal companion for travel, outdoor work, sports, camping, and beach vacations.