Ball watch company diver chronometerdm1022a s1ca bkyeprofessional divers need watches that remain readable in even the harshest of conditions the engineer master ii diver chronometer achieves the goal through the usage of 61 self powered micro gas tubes that glow 100 times brighter than luminous paint these illuminate the hands dial elements and internal bezel to ensure night time readability the watch is equipped with swiss made eta 2836 2 automatic calibre that is certified by control o