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