WHAT DO THE IPX RATINGS STATED IN THE PRODUCT DESCRIPTIONS MEAN?

IPX is an international certification for products in terms of their degree of dust or water resistance.
For MIIEGO® products, IPX5, IPX6, and IPX7 are used as indicators of whether the product can withstand sweat and water – IPX7 is the 100% waterproof model, while IPX5 and IPX6 indicate liquid resistance that can be described as rain and splashes from, for example, a water hose or similar. See the individual product description for more information regarding IPX certification.