?Hands-Free Necklace Design?This necklace fan has a unique hands-free design; just hang around your neck, start and enjoy the cool breeze; You can do other things with your hands; It is light in weight, so you will not feel heavy; Bonus of a mirror in the fan base ?Multi-Functional Indoor Outdoor Fan?Lanyard design plus built-in battery, makes it convenient to use outdoors like walking, shopping, hiking, maintaining, traveling; Silicone on the base, makes it convenient to use on desktop and avoid unnecessary movement; Great gifts for your family friends ?Long Working Hours?Although the fan is small, its working power is not small; The maximum rotation speed of the fan is 4800 rpm; 2200mAh High Capacity Rechargeable Lithium Battery, once fully charged, runs for 4 to 8 hours; The batteries are full charged in approximately 6 hours ?3 Speeds & 180°Rotation?The fan has 3-speed configurations, Low - Middle - High speed, adjust wind speed by pressing the power button; The fan support 0-180 degree angle adjust, satisfy different demands ?Convenient Charging with USB Devices?With USB charging cable, the fan could be powered and recharged by all 5V output USB devices, such as power bank, computer, etc.