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The IQ-900 can be operated as a Watch, Air computer, Nitrox (EANx) computer, Digital depth gauge/timer or as a Free dive depth gauge/timer.
The Zen's large alphanumeric and backlit display allows for high legibility in or out of the water, although its size is that of a normal style watch!
In addition to offering the latest comprehensive computer features, the Zen addsa Deep Stop function for enhanced safety.
Deep Stop Function
The Zen computer features an optional deep stop function for additional safety. The deep stop mode is activated when a dive exceeds 80 FT (24M) for more than 1 second. Upon ascent past 50 FT (15M), the computer will display a Deep Safety Stop screen and the recommended stop at 40 FT (12M) for a period of 2 minutes. This deep stop is highly recommended as additional opportunity to off-gas, but is not mandatory.
Click below to view a series of tutorial videos for the Tusa Zen IQ-900
[2 of 2 customers found this review helpful]
from Bridgetown, Barbados on 1/21/2010
Comments about Tusa Tusa Zen Wrist Dive Computer (IQ-900):
The Tusa Zen is great. I am relatively new to diving and this is my first computer. I have been very pleased. The computer has an easy to read display despite not being much larger than a standard wrist watch. The wet activation means you just get in the water and are good to go. The log and dive plan modes are easy to access.
Initial set up was straight forward though the manual has to be read cover to cover for it to all make sense, with certain items/terms raised in the beginning, but not defined until further into the manual. On the whole though, the manual does the job and all is clear if read completely. The Zen also comes with a nice, quick reference laminated card showing the most frequently accessed modes/screens-though the print on the card is very small.
[5 of 5 customers found this review helpful]
from BARBADOS on 11/16/2009
Comments about Tusa Tusa Zen Wrist Dive Computer (IQ-900):
EXCELLENT WATCH/COMPUTER, I HAVE HAD THE ZEN FOR ABOUT A YEAR AND ITS PART OF MY DIVE EQUIPMENT,VERY EASY TO READ UNDER WATER,FOR SOMEONE LIKE ME WHO IS NOT A COMPUTER FREAK, ITS VERY USER FRIENDLY.THE PRICE WON'T BREAK THE BANK EITHER.