Features: Experience cooling with this 4000mAh Waist Fan featuring 3 speed airflows control and up to 24 hour runtimes, for extended outdoor use while maintaining mobility. Engineered with a lightweight, adjustable waistband and noise reducing plastic construction, its 360degrees directional vents deliver customized airflows without restricting movement. Ideal for delivery driver, construction workers, and outdoor activity enthusiasts who require continuous cooling during physically demanding activity in hot environment. Perfectly adapts to campsite setups, crowded festivals, or intense tasks where traditional fan is impractical, ensuring comfort during prolonged heat exposure. Achieve workplace efficiency or leisures enjoyment through its quiet operation (under 30dB) and ergonomic design that stays securely positioned during vigorous activity like cycling or hiking. Specifications: Voltage: 5V Current: 2A Battery capacity: 4000mAh Noise: 60-70dB (inclusive) Wind speed gear: 3 gears Working time: about 3 hours for high-end, about 6 hours for medium-end, about 12 hours for low-end Speed: about 12,000rpm Component: Plastic Color: Black Size: Approx. 3.24x2.47x3.71inch(8.23x6.29x9.43cm) Package Includes: 1PC Portable waist fan note: Please allow 1-2cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color from the item.