⭐ Key Features Full metal housing (chrome-plated brass) → extremely durable and improves heat exchange in cold water Air-balanced valve → smooth, effortless breathing at any depth Adjustable inhalation effort knob → fine-tune breathing resistance VIVA (Venturi control) → prevents free-flow and boosts airflow when needed High-flow exhaust valve → easier exhalation and reduced breathing effort Compact and relatively lightweight (~261g without hose) Why Choose ScubaPro A700 Second Stage? Air balanced valve smooths out the inhalation effort at varying depths and supply pressures. Rugged full metal case, front cover and valve housing (barrel) are able to withstand years of aggressive diving. Metal construction enables the use of a larger diaphragm inside a compact casing, increasing breathing sensitivity. User controls include a diver-adjustable inhalation effort knob and coaxial-flow Venturi-Initiated Vacuum Assist (VIVA) lever. Super-flow hose features an oversized bore that allows more air to flow on each inhalation. Ultra-comfortable orthodontic mouthpiece is easy to grip yet doesn’t inhibit airflow. Weight (w/o mouthpiece): 9.2oz/261g Airflow 2900psi/200bar: 2000 I/min – 71 SCFM
