Comments about Hollis Gear Hollis DG02 Nitrox Computer Bottom Timer:

Although I havent made a dive with this comp yet, I bought it because of its similarity to the Aeris/Oceanic line. The manuals of all three are virtually identical for operation. The Hollis has some of the meters in defferent places but still operate the same. Priced a good hundred bucks below its nearest relative, the DG O2 is well worth the money considering it does everything the XR2 does, but with only 1 button operation. In having 1 button, it makes it easy to use as long as you can keep pressure on that button. It has a backlight which the XR1 does not. It has adjustable Nitrox settings which most comps have these days and is downloadable like the XR2. So in a nutshell, you get a combo of the XR1 and XR2 for half the price. hope this helps