520 g

✿ Semiconductor refrigeration technology, the strength of cooling. Using the second law of thermodynamics, the current generated by the semiconductor refrigeration chip forms a temperature difference, exchanges heat energy, and transmits the coolness to the skin in 2 seconds to achieve instant cooling.
✿ Long-lasting battery life, all the way with the wind. Built-in two 1800mAh lithium polymer batteries, charging for 1.8 hours can last for 4-8 hours, no matter whether you are on the way to work or shopping, it is enough to bring you all the way.
✿ Soft silicone material with a matching curved structure for comfortable neck protection, and adjustable size according to the unused neck circumference, allowing you to enjoy the cool air more comfortably.