Since 2010, Waterfi at 4379 30th St #2 has applied its patent-pending PlatinumX waterproofing process to consumer electronics from a production lab in North Park's 92104 ZIP code. Athletes shopping at Stubborn Goat Bike Shop and Ski Service for trail and water-sport gear pair those purchases with Waterfi's submersible MP3 players and fitness trackers. The proprietary dual-layer process seals internal circuits and contacts to IPX8 standards, rendering devices waterproof to depths of 210 feet for prolonged saltwater, chlorine, and sweat exposure. Swimmers and triathletes training at North Park Fitness use the company's waterproofed Apple Watch and Kindle units for pool and open-water sessions. The lab handles custom waterproofing runs on enterprise batches of fitness trackers and e-readers for swim schools, military dive programs, and triathlon coaching operations.