【IPX8 Waterproof Style & Compact Sizing】Eliminated The water-proof ring structure for a more compact dimension. Even now watertight to IPX8. Now we have designed a water resistant line on the inside edge of the solution (built-in in the merchandise) so that water cannot penetrate provided that 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