Long-Lasting 4300mAh Battery Life: Equipped with a high-capacity 4300mAh rechargeable battery, this mini fan runs approximately 3 to 16 hours depending on speed settings, keeping you cool throughout outings or workdays. High-Speed 20000RPM Turbo Airflow: Driven by an advanced three-phase brushless motor, this personal turbo fan spins up to 20,000 RPM to deliver strong airflow from such a small body. With 5-mode stepless control and 1-199 adjustable speeds, you can fine-tune the wind level from soft breeze to powerful blast Compact Yet Powerful & Ultra Portable: Weighing only about 130 g and roughly half the size of a typical smartphone, this mini fan easily into pockets, cosmetic bags or backpacks. Use it as a handheld fan, hang it around your neck with the included lanyard, or stand it on your desk. One-Touch Semiconductor Cooling: Using advanced semiconductor cooling technology, this W & O portable handheld fan delivers an instant, refreshing chill similar to a cooling pad for fast heat relief. Simply press and hold the power button to enter cooling mode and quickly cool Handheld or Desktop with Side Mirror & : Designed for both handheld and desktop use, this W & O mini fan features a side mirror for quick makeup checks and touch-ups anytime. The included lanyard allows hands-free carrying for shopping, travel or outdoor activities.