CrazyFire 3 Speeds Mini USB Cooling Fan Rechargeable Handheld Humidifier Fan Misty Cooling Hydrating Fan for Hot Summer Outdoor Traveling (Blue) This mini cooling replenishment fan have 3 different modes: Fan Mode/ Misty Mode/ Fan+Misty. Portable mini cooling Misty fan comes with the overcharge circuit protection to keep the lithium battery safety and durable. Recharge the mini fan if you find the wind force and misty effect not well, it can be charged while using, very brilliant. The product can be used as ordinary fan, at the same time also help we often keep the face or skin moist. The long-term humidification amount of fog. It will have a high frequency noise if water shortage under the Misty or Fan+Misty mode. Please turn the device off immediately and add water to enjoy the atomizing again. Do not add the alcohol such as perfume or essential oil, this will cause the water tank corroded.