About This ItemNeck Fan Instantly Cools 59FThe radiator is the secret of this neck air conditioner. The neck fan air conditioner has a built-in solid-state cooler that cools your entire body by cooling the back of your neck in seconds. Heat energy exchange through a semiconductor heat sink that transfers cold to the skin in 3 seconds, instantly lowering body temperature by 59F3 Cooling PlatesRapid cooling neck fan technology uses 3 cooling plates (most neck air conditioners on the market are designed to cool the cooling plates, not cold enough and stronger, only air conditioning cooling, no duct will not blow the wind) Surround your whole neck, Cooling every inch of your skin (left/right, neck, simultaneous cooling) Personal fan is the ultimate neck cooler2.5 hour charge| 3 hours battery life 3500mAH bladeless neck fan charging for 2.5 hours can experience up to 1.5~3 hours Cooling mode (wearable neck fan usage time may vary depending on the room temperature) LED display shows battery life and setting mode. Dual Mode Cooling and Heating Precise neck fan temperature control, providing reliable and even cooling or heating. The portable neck fan has 2 modes, 6 levels, 3 levels for cooling mode and 3 levels for heating, helping you stay warm in winter and cool in summer. Low noise - Easy to move The rechargeable neck fan adopts a leafless design, bringing silent and quiet air conditioning, the neck fans are powerful and weigh only 280 grams, suitable for jogging hiking, the personal neck fan is comfortable will adapt perfectly to your neck, The C-shaped neck fan design ensures a secure active fit, and the flexible two-wing design adapts to all neck sizes.