Product Comparison: Mares Smart vs Cressi Giotto

General Specifications
About the Products
What happens when you add the superior sharpness of segmented characters, clarity of a perfectly laid-out display, and top it off with ergonomic advantages of two buttons? You get Smart, probably the smartest computer on the market.
The 3 buttons computer Giotto provide all the necessary information in regards to depth,dive times,possible need of decompression, ascent rate and all the surface intervals between dives.
Key Specs
Mares-Wienke RGBM
RGBM + Deep Stop (optional)
Operating Modes
Free, Air, Nitrox, Watch
Dive, Gauge, Watch
Depth Limit
492 ft.
393 ft.
What customers say about "Key Specs"
Mares Smart Wrist Dive Computer
  • I bought this as an intermediate level dive computer for someone special. He loves to wear it as a generic watch as well as using it for diving.
  • I'm a new diver and bought this for a trip to Key Largo. It worked great. Fairly easy to use and not too bulky.
  • Extremely intuitive and easy to use. Much smaller than I expected. I ended up wearing it most all day every day without even thinking to take it off.
  • I love the backlit feature and the ease of changing from Air to Nitrox mode.
  • Not much larger than a large watch. Definitely much much better than a hockey puck.
Cressi Giotto Wrist Computer
  • It's a well-constructed computer that is good for entry level divers, and supports multiple gas mixtures.
  • I love this watch. It has made diving so much more fun and stress free. If you are looking for diving equipment to invest in, I definitely recommend this watch.
  • And I will say it performed admirably. I took it off the coast of Columbia and dove to approximately 75 ft and it handled perfectly.
  • Also the band on this computer is large. I'm a big guy and putting it around my wrist has a lot of overlap. No problems just information.
  • The wrist computer is just the right size ... Easy to read and with a good wrist band.
Size & Weight
1.97 in.
2.56 in.
1.97 in.
2.56 in.
0.7 in.
1.06 in.
3 oz.
4.76 oz.
1.25" matrix display
1.73" UFDS display
Altitude Options
Up to 12100 ft
Preset altitude
Logbook Memory
40 hours
75 dives, 60 hours
Audible Alarms
Battery Type
CR 2450
CR 2430
Battery Life
2 years
3 years
Full featured nitrox dive computer with two gas capability, Bottom timer mode with resettable average depth, Adjustable unit of measure
Adjustable PO2 of 1.0-1.6, FO2 adjustable between 21% and 50%, CNS oxygen toxicity graphic indicator, User-selectable deep stop function, Adjustable unit of measure, 3-button interface
What customers say about "Features"
Mares Smart Wrist Dive Computer
  • Two button operation is very intuitive, display is easy to read, reasonably good watch functionality
  • A mid level device that is backlit, easy to read, costing less than 1/2 others -- easy to program and software can be updated readily
  • The sound beep alarm when acending too fast can easily be heard. The display is easily visible under water.
  • It really helped with my ascents by slowing me down, and keeping me at the proper depth.
  • Nitrox compatable is nice. I've used it on 40+ dives and it's awesome.
Cressi Giotto Wrist Computer
  • After getting Nitrox certified, I decided it was time to get a multi-gas computer and after some research and talking to the experts at the local dive shop, chose the Giotto.
  • The interface is fairly intuitive and the three button controls make it easy to navigate.
  • It lets you know how many minutes you need for your rest stop based on the depth of your dive, the water temperature, if you are ascending or descending too rapidly, etc.
  • After a dive it displays the surface interval and saturation time, as well as a no-fly indicator.
  • . They worked great! I loved the large display. Very user friendly.
Warranty / Certifications
Manufacturer Warranty
2 year(s)
2 year(s)
Other Information

Other reviews