No.013
Scuba master
(Dive computer : M726)

Commercialization: in 1990

Feature:

This watch is the standard type model of the world's first dive computer watch which is inputted the dive table of non-decompressed diving of the U.S. Navy, and measures not only the present depth of water and diving time but also the surface interval time, and calculate and display the non-decompressed diving information on next diving at the time of repetitive diving. Moreover, log data is recorded by 20 times and it is useful also to diving management. The case is made by stainless steel and a black colored bezel is marked the information to operate this dive computer watch.