Check the listing for details. Seahorse 520 hard protective case with foam inserts.. Condition: New. Listed at 42.00 USD. The SE520’s QuickSnap Latches with Automatic Pressure Equalization, equalizes pressure upon opening. QuickSnap Latches are designed for consistent o-ring seal, creating IP67 waterproof security. With a molded comfort grip handle, no detail was overlooked with the Seahorse 520.