This desktop fan features 100 adjustable speed settings, allowing you to choose the perfect airflow intensity for any situation From a gentle breeze to a strong gust, you can control the fan's speed with a simple turn of the knob Equipped with a 1500mAh rechargeable battery, this fan can run for hours on a single charge This fan operates quietly, ensuring it won't disturb your work, study, or sleep With LED display screen, the battery level and gear level are clearly visible at a glance Triangular structure for stable support Specifications: Product model: SK-101 Material: ABS Input voltage: DC-5V 1A Output voltage: 0.5-1A Rated power: 2-5W Battery capacity: 1500mAh, battery type: 18650/21700 Gear position: 1-100 gears stepless speed Plug interface: TYPE-C, Mirco Product size: φ175*145*40mm Executive standard: GB4706.2005-1 Instructions: 1. The knob switch can select any gear within 100 gears from left to right. 2. You can use the fan while charging. The charging gear can also be adjusted arbitrarily.