Comments about Genesis "React Pro" Dive Computer Module:

This is a great entry-level dive computer with Nitrox functionality. It is easy to learn the operations, intuitive functions, enforces safe diving practices

Comments about Genesis "React Pro" Dive Computer Module:

I also bought the wrist boot, as I do not use a computer console; I do however have a back up Dive Rite mini-guages for my Mares Avantgarde BCD...Yes, with pneumatic tank adjuster!

Comments about Genesis "React Pro" Dive Computer Module:

I have owned many types of computers, and the genesis resource and react lines are the simplest to use and read with minimal fiddle factor. Other divers and instructors agree. I have one on a boot console, and another as a backup attached to the HP hose. Battery replacement is simple, but does require the tool they send you with the computer, so do not lose it. Nitrox, night diving, simple air diving, are all easy with this computer.

Comments about Genesis "React Pro" Dive Computer Module:

I bought it to replace my ancient oceanic cause I wanted to dive nitrox. I am using it in the oceanic wrist mount.

The good things:

Display and functions seem to be better organized then my old Oceanic which I use as a backup now. A couple of things I dont like about this computer...

Many more features then data100. Temperature, Nitrox, time remaining of NDL, O2SAT, PO2 computations, computer interface and a few more.

Illumination is good and functional.

The good things is that for basic things its easy to use and understand. It seems reliable and somewhat liberal.

Now the things that are not so great.

a) Menu system is somewhat convoluted. 2 menu sets. Have to remember which set the setting you want to change is at. Have to click buttons many times to get to the right settings.

b) to see elapsed time you have to push a button instead of it being on the main screen. I suppose they did that to reduce confusion... I would be nice if a setting could control which time you would see on main display.

c) LOG feature - very limited and hard to navigate. I dont have the computer cable. I suppose that would give me more info not sure.

d) Time to fly - just a simple 24hr countdown... The display that is supposed to show date and time to fly does not work and shows garbage.

e) a plastic screen protector gets fogged up easily and hard to read on the surface.

Comments about Genesis "React Pro" Dive Computer Module:

A couple of things to consider before you buy this. I have only used this DC for 12 dives so far, but my wife also has one with the same number of dives. For the typical recreational diver, this is good computer. If you are considering the less expensive model with only one button, you can register on Genesis' web site and download the manuals for both computers and compare features. The main feature that I was looking for was PC download so the Genesis ResourcePro model was not an option. If I had to point out the bad features of this DC, it would be that part of the display (symbols printed on the white ring) are partially hidden by the black rim, buttons, and protective plastic shield. That means that you will not get a clear picture of the N2 loading and the ascent rate when you glance at it. And, if you ever should enter a decompression mode, you will have a hard time seeing the decompression stop depth. That said... after you get used to viewing the display under water, you learn the "position" of the above items. The DC also comes with audio alarms for violations and notices. For example, a single beep will sound when you reach the safety stop depth; however, the sound is so weak that you will not hear this beep. It is faint even if you hold up the DC to your ear.

With all the negatives above, here are the positives. The majority of setting, you set up well in advance of your dive. If set correctly, you will not have to change them again. The only thing that I set before each dive was the Nx %, which is one of the first menus you reach.

Underwater, the main display that tells you current depth and how much bottom time you have available is clearly displayed (calculated based on N2 loading or O2 saturation). From the main screen, you need to push a button to reach the other screens (such as max depth, temperature, O2 info, etc.). It is simple enough but you need to study the manual to remember what all the information means.

If you are considering buying the cable for PC download: Note that a lot of web-posts on the internet suggest there are problems with the communication between PC and DC. I had the same problems and was ready to give up and send the cable back until I figured out to select that you have a "REACTPRO(WHITE)." The other option ("REACTPRO") made more sense to me but I was wrong...I presume that the reference to "WHITE" has to do with the white ring around the display. Once this was done it was easy to download the information to the computer. The software could be better designed but it is adequate. I still like to keep my paper logs handy. If you do not have the cable, you can still access the logs on the DC but only the vital information.

All-in-all, this is a good computer for the average diver that do not plan to be a technical diver doing regular decompression dives.