The Porodo Lifestyle Handheld Turbo Fan for Outdoors helps you stay cool and fresh. With its powerful 4000mAh battery (2000mAh x 2), this portable fan guarantees a long time of usage with a single charge that takes 3.5 hours. You can choose from 4 speeds to customize your cooling experience, and each of them differs in terms of working time. Plus, convenient charging options are provided by the fan's Type-C charging port and 5V/2A rated input. The Porodo Lifestyle Handheld Turbo Fan can run continuously for up to 13 hours (based on your preferred wind speed) before needing to be recharged, which makes it a dependable camping accessory for daily use, sporting activities, and outdoor adventures. Specifications Battery Capacity: 4000mAh (2000mAh x2) Working Time 13H (Level 1) - 5H (Level 2) - 3H (Level 3) - 1H (Strong Wind) Recharge Time: 3.5Hours Rated Input: 5V/2A Charging Port: Type-C