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Suunto EON Steel Black Wrist Dive Computer



The Suunto EON Steel Black Wrist Computer is the new standard for advanced/technical diving. The long-anticipated EON Steel Black sets new standards in the diving world with its new brilliantly bright colour display, fully customisable interface, rechargeable battery and extremely rugged construction. The EON Steel Black was designed for divers, by divers and will deliver well beyond your expectations.

Caves, wrecks or the blue unknown — the choice is yours. Equipped with Suunto Fused RGBM 2 and Buhlmann 16 with Gradient Factors dive algorithms, Suunto EON Steel Black is the ultimate dive companion for divers demanding the most. With its extremely durable design, multi-gas and CCR support, customisable features and wireless mobile connectivity with Suunto app, your diving adventure has no limits. Designed and tested by divers, for divers.

Full Configurability For All Diving

The Suunto EON Steel Black is designed to give you the freedom to tailor your dive computer to fit your diving needs. Choose between different views or select dive details you want to see during your dive. Intuitive menus and a simple 3-button layout make Suunto EON Steel Black very easy to use despite the many options available.

Equipped with two dive algorithms, Suunto Fused RGBM 2and Buhlmann 16 GF and configurable ascent profiles, you decide what is your decompression profile for today's dive.

Designed For Years To Come

Suunto EON Steel Black comes with a stylish brushed stainless steel bezel and a vivid high contrast color screen — easy to read even in low light conditions. The long-lasting battery endures even the toughest diving conditions, and with a full charge, provides up to 40 hours of diving.

Put to the test in the toughest diving conditions by Suunto's internal dive team on hundreds of dives — the Steel Black is functional, accurate, and built to take a beating. The reusable storage case and user updatable software, Suunto EON Steel Black is your trusted diving companion for years to come.

Wireless Connection

Transfer your dive logs easily over Bluetooth to your mobile phone. With the Suunto app you can relive, and share your diving adventures, build an all-inclusive dive history by enriching your dive logs with photos, comments and dive location. Review and analyse your dive data including dive time, maximum depth, device settings, gas consumption (when using Suunto Tank POD).

Follow your pressure conveniently straight from your wrist. Get tank pressure on your display wirelessly by pairing your Suunto EON Steel Black with a Suunto Tank POD before diving. You can connect up to twenty PODs. For computer and POD complete.

User Customisation

The Suunto EON Steel Black's main priority is diver control and usability. It all starts with full user customisation. Suunto claims that this computer will grow with you as your diving and skills evolve. The Suunto EON custom colour display assures that. You can choose between classic and graphical viewing and define exactly what you want to be displayed all within four custom user displays. The EON is also setup to receive customisable add-on skins and comes with a wrist strap and bungee option for whatever works best for you.

Within your custom-set interface you can cycle between features such as: multi-gas diving (up to 20 gases) with air/nitrox/trimix support, integrated tilt-compensated 3D compass, altitude adjustment, alarms/stops, decompression data, gauge/bottom timer mode, timer, depth alarms, and air integration options.

Stay Up-to-Date

Suunto updatable software will save you big bucks in the long run. Instead of buying model after model, year after year, you can download and update your EON with new software (such as closed-circuit rebreather). Suunto DM5 software allows you to plan out your dives in advance and then seamlessly transfer your data to your computer. The easy to use 3-button interface is accessible even with the thickest cold water diving gloves. Additionally, the brilliantly bright colour display that can be read at any angle plus the simple 3-button interface makes this computer incredibly simple and usable at any level of diving for new and advanced users.

Designed To Be Tough

The Suunto EON Steel Black's construction is no less impressive. The housing makes use of extremely rugged reinforced composite with over 50% of that being strong glass fibre. The bezel is constructed with brushed stainless steel that will handle years of abuse. Plus, the highly durable and resistant Xensation glass screen will withstand rugged use time after time.

The Suunto EON Steel Black is guaranteed to 150 metres (492 feet), has an operational temperature range of 0 Degree C to +40 Degree C (+32 Degree F to +104 Degree F) and has been tested and tested again for all types of diving. Additionally, the new rechargeable battery will last 20–40 hours of dive time on a full charge and can be charged when connected to a computer or with a Suunto charger.

The Suunto EON Steel Black is quite literally the greatest dive computer available today. It is extremely versatile, technologically advanced, user friendly, fully customisable, rugged, and usable by any level of diver in any diving situation. The EON Steel Black is an investment that will pay you back again and again with its updatable software and durable construction. Make the switch to one of the most advanced computers on the market today.

Computer comes with a USB cable, quick guide, safety and regulatory leaflet, protective boot, display scratch guard, bungee adapter, extra strap loop and Suunto sticker.

Suunto EON Steel Black Wrist Dive Computer Features

  • Equipped with Two dive algorithms
    • Suunto Fused RGBM 2
    • Bühlmann 16 GF and configurable ascent profiles
  • Fully Customisable Computer
  • Air, CCR, Gauge, Mixed Gas
  • CNS% + OTU Calculation (OLF)
  • Gas Switching Betwwen 20 Gases During Dive
  • Air Integration
  • Bluetooth Smart / USB Cable
  • Upgradable Firmware
  • Depth Rating: 150 metres (492 feet)
  • Battery Power Indicator

Suunto EON Steel Black Technical Specifications


Bezel material: Stainless steel
Glass material: Xensation Glass
Case material: Reinforced composite
Strap material: Elastomer
Weight 347 g / 12.24 oz
Firmware upgradable Yes
Water resistance 150 m (ISO 6425, EN 13319)
Battery type rechargeable lithium-ion
Time, date Yes
Stopwatch timer Yes
Languages EN, CS, DA, DE, ES, FI, FR, IT, JA, KO, NL, NO, PL, PT, RU, SV, TW, ZH
Backlight LED
Configurable backlight Yes
Flip display Yes
Display type Colour TFT
Display resolution 320 x 240
Battery indicator icon + dive hours remaining
Metric and Imperial units Yes
Alarm clock 1 daily alarm


Smartphone compatibility Most common models supported
Connectivity (between devices) Inductive (up to 20 Tank PODs), Bluetooth Smart
Compatible with Suunto app Yes
Compatible with SuuntoLink Yes


Digital compass Yes
Tilt compensation up to 45°
Declination correction Yes
Direction scale degrees
Needle compass rose
Globally balanced Yes
Bearing lock with direction indicator Yes
Compass accuracy

+/- 15°

Compass resolution

Physical Specifications

Operating temperature 0° C to +40° C / +32° F to +104° F
Storage temperature -20 ° C to +50 ° C / -4° F to +122° F
Recommended charging temperature 0° C to +35° C / +32° F to +95° F

Diving Functions


Maximum operating depth (EN 13319) 150m
Rebreather (CCR), fixed point Yes
Trimix (mixed gas) Yes
Nitrox (and air) Yes
Gauge Yes
Dive time 0 to 999 min
Surface time 0 to 100 h
No fly time Yes
Safety Stop Yes
Deep Stop Yes
Ascent time display 0 - 999 min ( > after 999)
CNS/OTU (OLF) calculation Yes
Gas time Yes
Gas consumption (real-time) Yes
Custom displays 4 per dive mode
Altitude adjustment 0 - 300 m / 300 -1500 m / 1500 - 3000 m
Gases up to 20 gases (Oxygen 5 - 99% / Helium 0 -95%)
Gas max pO2 manual 0.5 - 1.6 / fixed 1.6
Gas switching Yes
Timer Yes
No-decompression planner Yes
Logbook memory 200 hours or 400 dives (whichever comes first)
Logbook bookmarks Yes
Logbook sampling rates 10 s
Dive History lifetime
Decompression profile options continuous and stepped
Wireless gas integration optional (up to 20 different tanks with Suunto Tank POD)
Decompression model Suunto Fused™ RGBM 2
Bühlmann 16 GF
Personal adjustment P+2, P+1, P0, P-1, P-2
Gradient factors low (10-100) and high (50-100)
Visual style Default/Graphical/Prominent

Dive Alarms and Notifications

Too fast ascent Yes
Decompression ceiling violation Yes
Deepstop violation Yes
CNS/OTU (OLF) 80% / 100% Yes
Switch gas (better gas is available) Yes
Diluent switched automatically Yes
Diluent high pO2 Yes
Diluent low pO2 Yes
ICD warning Yes
Dive time Yes
Gas time Yes
High pO2 (hyperoxic) Yes
Low pO2 (hypoxic) Yes
Maximum depth Yes
Tank pressure Yes


Diluents Yes
Bailout Yes
High/low setpoints Yes
Manual/automatic setpoint switching Yes
Custom setpoint Yes

Outdoor Functions


Temperature Yes
Temperature display range -20° C to +50° C (+/- 2° C) / -9° C to +122° F (+/- 3.6° F)
Temperature resolution 1° C / 1.5° F

What's In The Box?

  • EON Steel Black
  • USB Cable
  • Quick Guide
  • Safety and Regulatory Leaflet
  • International Warranty Leaflet
  • Protective Boot
  • Display Scratch Guard Sticker
  • Bungee Adapter
  • Extra Strap Loop
  • Suunto Sticker

Download the Suunto EON teel Black User Guide (PDF, 48 pages)

Suunto Warranty:

  • The International Limited Warranty Period starts at the date of original retail purchase.
  • The Warranty Period is five (5) years for failures attributable to the depth measurement (pressure) sensor on Suunto Dive Computers.
  • The Warranty Period is two (2) years for Dive Products and Dive transmitters unless otherwise specified.
  • The Warranty Period is one (1) year for accessories including but not limited to wireless sensors, chargers, cables, rechargeable batteries, straps, bracelets and hoses.

Note: This item cannot be delivered outside of Australia.

The Suunto EON Steel Black is also available bundled with a Tank Pod.

What We Think...

The multiple award-winning Suunto EON Steel Black is, as advertised, a computer that grows with you. The large, clear colour display is great for divers who struggle to read smaller dive computer displays. It's perfectly suited for the entry-level diver with its sleek, intuitive, compact and lightweight design, but those who dive once a year and have no intention of progressing further may find the Suunto Zoop Novo more suited to their budget.

For the more active recreational diver going beyond basic recreational requirements, the digital 3D compass and support for multiple tank pods make this a great solution. For divers who think they might develop into technical diving, the Suunto EON Steel Black is a worthwhile investment, allowing the possibility of up to twenty Air, Nitrox and Trimix gas mixes, plus CCR diving as they acquire the relevant skills.

We know some people dislike the Suunto Fused RGBM model for being 'too conservative', however, we believe conservatism in recreational diving is the order of the day. Dedicated techies may prefer the Bühlmann-based algorithms to squeeze in those extra few minutes of dive time, but pushing limits is not on our list of things to do. Besides, you can change the settings and make the Suunto EON Steel Black's Fused RGBM model more or less conservative as you wish. Or you can switch to the Buhlmann 16 GF model with configurable ascent profiles. You decide what's your decompression profile for the dive.

Confused about Decompression Algorithms?

There is a lot of talk about the benefits and problems associated with various diving decompression algorithms. In this video, Dr. Bruce Wienke, the respected creator of the decompression software used in the Suunto dive computers and many other brands, discusses the key differences between Suunto's Fused RGBM and the open-source Buhlmann GF model.

There are people who criticise the Suunto Fused RGBM model saying it forces them to spend extra time in the water compared to a dive computer using the Buhlmann GF model. Not so. You can adjust the conservatism of the Suunto software. Make it more aggressive for less time decompressing, or even more conservative. The choice is yours.

There are people who complain that the Deep Stops feature of the Suunto software holds them up when diving with buddies whose dive computers don't support deep stops. Then turn it off. Deep Stops are an optional setting. You don't have to do them.

In a recent test, a boatload of technical and rebreather divers with dive computers using the Buhlmann GF model were given Suunto Eon Core dive computers to take on their long deco dives. They all said that they wouldn't wait for the Suunto, that they'd dive as their own Buhlmann GF model dive computer told them to. Based on the myths they had heard, some divers said that this would mean that they'd thus be locking the Suunto EON Core out and that the EON Cores wouldn't be able to be used the next day.

Well the settings of each Suunto EON Core was adjusted to match the aggressiveness or conservatism of the Buhlmann GF settings each diver was using. Dives completed and back on the boat, not one Suunto EON Core had locked out. Every Suunto EON Core had closely matched the other dive computer throughout the dive. Myth busted!

We sell dive computers that use the Buhlmann GF model, and ones that use the Suunto Fused RGBM model. Take your pick. Just don't base your pick on the misinformation and myths that are out there about these diving algorithms.

(04/22 AJG)

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