I am selling this item because I don't use it very often. It can not only cool, but also warm your neck as it supports both cooling and heating. AICE RANVOO neck cooler with ergonomic design, rechargeable and equipped with cooling function. - Model Name: AICE RANVOO Neck Cooler - Function: Cooling function included - Power: Rechargeable - Operation Buttons: Power button, mode switch button - Design: White color, ergonomic design Thank you for looking. I bought it last year, but I've only used it a few times.