This is the SONY REON POCKET PRO. It's a model with tags. It's a wearable thermo device that you wear directly on your neck to cool or warm the surface of your skin where it makes contact. It seems the cooling area is twice as large, the airflow is twice as strong, and the battery life is twice as long as the previous model. I used it a few times this summer, and it definitely cooled my neck, making the heat of the scorching sun more bearable. I haven't tried it recently since it's not hot now, but I think it will also help with the cold in winter. You can adjust the level with the buttons on the device or with a smartphone app, and you can also use the attached sensor for automatic adjustment. Please consider it. (Search terms) Sony, REON POCKET, neck cooler