It is such a shame that Tusa dive computers don't receive more good press as they offer some great features.
The IQ-900 Zen is TUSA's latest full-featured wrist-top, watch style computer. The Zen is a stylish instrument that can be worn at the office, on the town or in the ocean - anytime, anywhere the Zen is your go to timepiece and dive instrument.
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 adds a Deep Stop function for enhanced safety.
Deep Stop Function
Several TUSA computers feature 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, the computer will display a Deep Safety Stop screen and the recommended stop depth for a period of 2 minutes. This deep stop is highly recommended as additional opportunity to off-gas, but is not mandatory. If the diver chooses not to serve the stop it will not adversely affect the remaining No-Decompression Limits of the dive.
Features:
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Advanced 2 gas wrist-top (watch) computer.
Air, Nitrox, Gauge, Free Dive and Watch Operating Modes.
2 Mix Switching Feature: Mix 1 (Air, 21-50%), Mix 2 (Air, 21-100%).
Manual or Water-Activation.
Audible and Flashing Icon Alarms.
Large alphanumeric and backlit display.
Advanced user safety settings.
Deep Stop Feature and Safety Stop.
1 Touch Log Access.
Automatic altitude adjustment from sea level to 14,000'.
No fly icon, residual nitrogen discharge time display.
PC download and upload settings/log data with TUSA Datalog Interface.
User-replaceable battery with hot-swap (Battery: CR2430, 3V).
TUSA Algorithm based on Buhlmann ZHL-16c.
Variable Ascent Rate Indicator.
Colours: Titanium Grey/Black, Black.