【IPX8 Water-resistant Style & Compact Size】Eliminated The watertight ring structure for a more compact dimension. However water resistant to IPX8. We've created a watertight line on The within fringe of the products (built-in into the products) making sure that drinking water are unable to penetrate providing the screws are tightened. https://www.wanderlustprogear.com/products/airtag-dog-collar-adjustable-for-apple-airtag-silicone-case-designer-collar-for-small-medium-large-dog-pet-gps-accessories