Vigil Cuatro
Four-mode AAD from Advanced Aerospace Designs (Brussels) with PRO, STUDENT, TANDEM and XTREME modes, self-test at every switch-on and no scheduled maintenance; 20-year design life, battery replaced by the manufacturer (max 12 years). Activation stops below 150 ft (300 ft in XTREME); in PRO the actual activation altitude ranges from 840 to 1100 ft depending on body position.