1-100 Wind AdjustmentNewly upgraded portable neck fan provides 1-100 gears of detailed wind power selection, precise adjustment to meet your personalized needs.3D Ice Feeling Breathable Neck BraceThis neck air conditioner is innovatively designed with a rear-mounted 3D ice feeling breathable neck support, which effectively solves the problem of sweaty and stuffy neck, and brings you a refreshing and comfortable experience.Front Airflow & Back CoolingThe neck fan air conditioner adopts the advanced fifth generation of new semiconductor refrigeration technology, built-in TEC cooling unit, just 3 seconds to achieve rapid cooling, enjoy the ice feeling.LED Digital DisplayThe personal air conditioner neck fan adopts LED digital display, which can clearly and intuitively show the wind power and power status, so you can easily understand the status of the device at any time.Use While Charging & Ultra-long Battery LifeThis neck fan has a built-in 4000mah rechargeable battery, providing long-lasting battery life. You can also use it while charging, no need to worry about insufficient power, so you can play without worry.