Couius 3-in-1 Neck Cooler, Wearable Fan, Instant Cooling Neck Fan

Received as a gift from an acquaintance, but I'm selling it because I won't be using it.
The box has been opened to check for any malfunctions, but it has not been used. Only initial operation has been confirmed.
The protective film on the outside has not been removed and it is in beautiful condition.

[Double Cooling Plates - Instant Cooling] Cools down in 1 second after turning on the switch. The crisp, cold left and right cooling plates cool your neck, lowering your perceived temperature by -15°C. The double effect of the cooling plates and the neck fan delivers a cool breeze to your face and neck. The powerful cooling sensation that spreads from your neck to your entire body alleviates heat and is ideal for preventing heatstroke.

[COOL / HOT for All Seasons] The plates attached to your neck cool in summer and warm in winter, comfortably regulating your body temperature. You can choose the operation according to the temperature, and it can be used all year round, such as with the fan + plates in summer and only the plates in winter.

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#See Nana*'s product list here

Couius Neck Cooler, Cooling Plates, Neck Fan, Ultra-lightweight 290g, Instant Cooling, Neck Fan, Heatstroke Prevention, Fast Charging, 4000mAh, Gift, Portable Fan, White, Fan, Heat Relief, Travel, Walking, Running