This is a beautiful item, used only once. It has been disinfected with alcohol and is in its original box. Please refrain from purchasing if you are uncomfortable with used items or are overly concerned with cleanliness, as this item has been handled by a person. Please consider the above before purchasing. Product Description This neck cooler uses semiconductor cooling technology to achieve a -15℃ cooling sensation. - Model Name: Neck Cooler - Battery Capacity: 4000mAh - Cooling Effect: -15℃ sensation - Usage Time: 16 hours - Cooling Technology: Semiconductor cooling - Connection Terminal: Type-C - LED Display: Yes - Design: Hands-free Thank you for viewing.