JISULIFE Turbo Fan 16H Battery Life Mini Handheld Fan Life5 Plus 5 Speeds Portable Hand Fans USB Rechargeable Personal 4000mAh Small Pocket for Travel Outdoor Students Kids

【Patented Turbo Airflow】JISULIFE hand-held turbo fan has 2 patents of vortex technology: air turbine and air jet. Air duct turbines accelerate and compress the airflow, making the wind stronger and closer to nature. 【5 Gear Turbo Wind】JISULIFE Portable Handheld Fan Upgraded 5 Gear Turbo Wind Strong Heat Dissipation. Just press the power button to change the fan speed setting, short press the mode to switch from low speed (3300r/m) to high speed (6100r/m), and long press on any gear to turn it off. 【Maximum Cooling Time 16 Hours】JISULIFE Handheld Fan is equipped with a 4000mAh rechargeable battery (twice larger than ordinary handheld fans), which can provide 3-16 hours duration (depending on different speeds). You can charge it from a regular socket, power bank, computer or any other device with a USB port, and it only takes 3 hours to fully charge. 【POWERFUL AND ENERGY SAVING】JISULIFE Personal Handheld Fans use high performance motors and optimized air ducts to improve wind power while minimizing noise. Compared to other hand-held fans, it is faster (6100 rpm) and stronger (100 ft/sec). 【Handheld/Desktop Fan】JISULIFE mini handheld fan is equipped with a lanyard and non-slip pad, you can hang it on your hand when outdoors and use it as a flat fan indoors.