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WELCOME TO THE WORLD OF SUUNTO DIVING INSTRUMENTS ................ 5 1.1. Using HelO2 with Dive Manager and Dive Planner ................................. 5 2. WARNINGS, CAUTIONS, AND NOTES ................................................... 6 3. SUUNTO HelO2 AT A GLANCE ............................................................ 9 3.1. Navigating in the menus ............................................................... 9 3.2. Button symbols and functions ....................................