The merchandise under consideration is identified as the UV-C Zap Band and is described as a sanitizing wristband. The device consist of a plastic case, incorporated UV-C LED lights, a printed circuit board (PCB), plastic bands, and a stainless steel buckle. The device also has a charging port and an ON/OFF button. The subject wristband is worn by the user and is meant to act as a portable sanitizer for various items such as smartphones, keyboards, utensils, cups, plates, tables, doorknobs, bathroom fixtures, and steering wheels. In use, the UV-C light within the device is directed at the item to be sanitized, killing any present viruses or bacteria.
[1] Please importantly note that only the relevant portion of the related is displayed above. You may refer to the said customs ruling for the entire ruling explanation.
[1]. https://rulings.cbp.gov/ruling/N314062