Subgravity's submersible marker buoy features an upgraded metal oral/BC inflator with integrated one-way valve technology, eliminating the need to compress while orally inflating. This precision-engineered component ensures reliable buoyancy control during subsea operations, allowing divers to manage ascent rates and positioning with confidence. The one-way valve design prevents backflow and simplifies inflation procedures in demanding underwater environments. Built for professional diving teams requiring dependable surface signaling and buoyancy management on extended missions.