Advanced nine-blade design and high-speed brushless motor deliver powerful winds up to 10m/s for efficient cooling Maximum 40,000RPM provides four times the power of typical handheld fans for faster, more effective airflow Five-speed adjustment allows you to customize airflow, from light breezes to strong gusts, for optimal comfort in any situation Battery life lasts between two hours to 8.5 hours, offering extended cooling based on different levels and usage scenarios Ultra-small design and 160g lightweight build make it easy to carry in your pocket or bag, replacing bulky fans with portable cooling Perfect for all ages and ideal for use at work, travel, and outdoor activities