Patented Turbocharged AirflowJISULIFE Handheld Turbo Fan has 2 vortex tech patents: Air Turbo and Air Jet. The airflow is accelerated and compressed by the air duct turbine, the wind is stronger, and the wind feeling is closer to nature.5 Gear Turbo WindJISULIFE Portable Handheld Fan Upgraded 5 gear turbo wind for potent cooling. You just simply press the power button to change the wind setting, short press to cycle switch low-speed (3300r/m) to high-speed (6100r/m), and long-press at any gear to turn it off.16H Max Cooling TimeJISULIFE Hand Held Fan comes with a 4000mAh rechargeable battery(twice larger than a normal hand fan), which can provide 3-16 hrs duration (depending on different speeds). You can charge through a regular outlet, power bank, computer, or any other device with a USB port, just 3 hrs to have a full recharge.Powerful & Energy-efficientJISULIFE Personal Handheld Fan features a high-performance motor and optimized air duct to improve wind power while minimizing noise. Compared to other handheld fans, it has a faster speed (6100 r/min) and stronger wind (4.8 m/s).Handheld/Desktop FanJISULIFE Mini Handheld Fan comes with a lanyard and an anti-slip mat at the bottom, you can hang it around your hands as a handheld fan when outdoors, and used it as a small desk fan on a flat table. Suitable as a gift for women!