LB Altimeters is dedicated to bringing skydivers the best in audible and visual altimeters. Latest technology, innovations and user-friendly features! Starting with the Original DYTTER™, they have come a long way and are now offering audible altimeters like ProTrack II™, Solo II™, Optima II™ and Quattro™. Extended their altimeter line and brought you Altitrack™, Viso II+™ and ARES™.