The console affords a convenient mode of stowage and a reliable gas integration method allowing diving gas usage to be monitored accurately. The Mares Nemo Air is a gas-integrated computer that includes dive computer and gas pressure gauge in one. The Mares Nemo Air is a competent computer for recreational diving and the addition of gas-integration via a console route has made it an even better choice.

The Nemo will tell you current scuba cylinder pressure, how much remaining breathing time you have left at your present breathing rate and also what that breathing rate is.

Mares diving computers use the Mares-Wienke Reduced Gradient Bubble Model algorithm for diving decompression software which takes into account micro bubbles formed in the body and attempts to reduce their likelihood. The algorithm is very similar to the Suunto RGBM.

The diving information included on the display is very similar to most other dive computers – showing no-stop time remaining, current and maximum depth and stop information. This includes a countdown of both deep stops and safety stops.

As a recreational computer it will only allow a single gas mix of up to 50% nitrox – and when diving on air the computer should be set to 21% nitrox rather than the air setting as not doing so would incur a 49 hour lockout when switching from air to nitrox.

The dive computer unit easily detaches from its hose fitting for safe transport away from the bulk of your dive gear. It has a bayonet fitting that involves a simple quarter turn to fit or remove. Without an electronic compass included, however the console does have an attachment for a traditional analogue unit.

At £499.95 mrp this is not a cheap diving computer but for gas integration it is reasonable value – 7. Performance is good, ease of use brilliant – 7

I have never been emotionally tied to one or two manufacturers but do appreciate the strength of a good brand. I have used a Mares Abyss regulator for around 6 years until getting my twin set with Apeks regulators. I still take the Mares Abyss on holiday and use it for instructing with a single cylider. It is the best regulator I have ever used and has been bomb proof so far.

So I would be happy to consider a Mares diving computer. The Puck is unlike most diving computers in that it has only a single button to press, using a scrolling menu. It does work well, but the only down side is that if you miss a menu item you have to go back to the beginning and start again!

The Mares-Wienke Reduced Gradient Bubbles algorithm considers microbubble formation and the use of deep stops. In use the Puck dive computer gives very similar dive times to the Suuntos, if anything the first dive of the day may be a little longer but thereafter things even up.

This is a simple to use, easy to set up and read, good value starter diving computer at around £150 – 10/10 for value and 9/10 for performance. Its a shame that you have to pay £80 for the dive computer PC link if this is something you feel is essential.

Like the Gekko, the Puck can be mounted in a console if required. Several of our club members have bought this computer and there are no complaints from any of them so far!