Special tech episode of Pod Diver Radio, host Joe Cocozza checks in live from Beneath the Sea 2015 with SubGravity president and dedicated cave diver Josh Thornton for a deep dive into modern CCR gear. Josh shares how a childhood cenote dive in Mexico pulled him into cave diving—and how that passion now drives SubGravity's design philosophy. Together, they unpack the Hammerhead closed circuit rebreather, including: The online "Build a Rebreather" (BART) configurator that lets you spec your Hammerhead from can size to materials The removable O₂ cell cartridge pre-wired for up to four sensors, making swaps, drying and inspection easy Click-lock bayonet hose fittings that simplify setup, teardown and mushroom-valve checks—no threads, no hassle Then they turn to the H3 dive computer—a compact OLED unit developed with the Austrian military—covering: Full support for air, nitrox, trimix and CCR so you don't outgrow your computer NFC (near-field communication) logging straight to your phone for instant dive downloads and sharing The roadmap for wireless cylinder pressure and future wireless PO₂ monitoring, all enabled via firmware updates on the same unit If you're a CCR diver, a rebreather-curious OC tech diver, or a cave diver looking for robust electronics and modular life support, this Hammerhead + H3 breakdown is packed with practical, gear-nerd detail.