skull capAbout this projectInstant cooling: High-tech leads the way. This personal fan uses semiconductor cooling technology. The current generated by the semiconductor heat dissipation chip generates a temperature difference, which achieves instant cooling within two seconds. It provides you with the cool air you need most and reduces the temperature of your personal space to a maximum of 6 to 9 degrees.HANDS-FREE AND PORTABLE - Soft silicone material has an adjustable flex structure for comfortable neck protection and adjusts size to your unused neck circumference. The neck fan is as lightweight and portable as earphones and hangs around your neck. The special handheld design lets you free your hands and enjoy the cool breeze while doing what you want. Hanging on the neck, it is suitable for traveling in hot weather, avoiding the embarrassment of sweating in public places.USB Rechargeable & 3 Modes Adjustable - Portable Fan Built-in Two 1800mAh Li-Polymer Batteries, Rechargeable for 1.8 Hours, 1st Mode is Breeze Mode, 2nd is Low Wind Mode, and 3rd is High Wind Mode wind mode. It can last 4 or 8 hours (or a different pace) whether you're working or shopping.VERY VERSATILE - The mini USB fan is easy to carry and store and is a true hands-free neckband fan. Indoor activities are great outdoors It is a project suitable for all scenarios such as summer festivals, outdoor, barbecue, sports viewing, walking, climbing, hiking, festivals, commuting and school. It can be used as an electric fan in summer. You can enjoy clean and comfortable air.