(7 customer reviews)


Bigger and better than ever, the ProPlus 4.0 features the latest Bluetooth 4.0 technology. Now divers can adjust and customize all their dive features on the go pre-and post-dive. ProPlus 4.0 boasts a new display area, wider font size, and 22% larger digits than its predecessor (ProPlus 3), making it clearer and easier-to-read than ever before. With Bluetooth compatibility, ProPlus 4.0 adds to Oceanic’s commitment to growing the largest family of Bluetooth compatible computers available to divers.

The ProPlus 4.0 connects to your smartphone through the free DiverLog+ App, available in the app store. Divers can adjust the dual Nitrox mixes, switch the Dual Algorithm™, gas mixes, user display, alarms, all on the go pre- and post-dive.

Pre-Dive: plan your dive with alerts for time and depth, select your gas mixes from the comfort of your mobile device, and more!

Post-Dive: download your dive instantly to your mobile device, view your most recent dive profile and information, add photos and videos, and use the search query to filter by location, dive type and depth.

Learn more about Diverlog+

Easy 1

Just Twist And Go

Done with your dive for the day but you don’t want to leave your computer on deck with the rest of your gear? No problem, get the ProPlus 4.0 with optional quick disconnect and twisting locking ring for extra security.

Easy 1

The ProPlus 4.0 features an XL display area and wide font size that is crisp and easy to read, and 22% larger digits, making it among the clearest consoles on the market.

Dual Algorithm

Choose the Right Algorithm for Your Dive.
Pelagic Z+ offers a conservative approach to recreational diving or maximized bottom time for deep and decompression dives, maximizing dive times at depth without excessive penalties. Pelagic DSAT safely maximizes dive times for repetitive, multi-level recreational diving.

Dive in Sync with Any Buddy, Anywhere.
Dual Algorithm allows you to choose the algorithm and its conservatism. This means the Pro Plus 4 can closely match your dive buddy’s algorithm, eliminating the need for either of you to cut your dive short, even if you’re diving different computers.

ProPlus 4.0
Modes of Operation AIR, NITROX, GAUGE
Push Buttons 2
Mounting Options CONSOLE
Activation Water or Push Button
Algorithm Basis Modified Haldanean / DSAT (Diving Science and Technology) Database / Z+
Altitude Algorithm Basis NOAA
O2 Limit Basis NOAA
Tissue Compartments 12 (5 to 480 minutes)
Automatic Altitude Adjustment 2,000 – 14,000 ft / 610-4200 m
Decompression Capability 10 – 60 ft (3-18 m)
Automatic Safety Stop Prompt YES
Cylinder Pressure and Air Time Remaining YES
Audible Alarm YES
Alarm Acknowledgment (U/W Deactivation) YES
Ascent Rate Range 3-9 m/min – 6-18 m/min
Ascent Rate Maximum 30 fpm (<60 ft)  – 9 m/min (<18m)
60 fpm (>60 ft)  – 18 m/min (>18m)
OceanGlo Backlight (Push Button) YES
SmartGlo Backlight (Sensor) YES
Diver Replaceable Batteries YES
Battery Type CR2
Battery Life* 300 HOURS
Battery Hot Swap (retains calculations) YES
Low Battery Indicator (Graphic) YES
Calendar / Clock YES
Operating Depth (Max) 330 ft – 100 m
Operating Depth (Gauge Mode) 330 ft – 100 m
12/24 Hour Time to Fly Countdown YES
Calculated Desaturation Countdown YES
High O2 Alarm / Warning 300 SOTU / DOTU
High PO2 Alarm / Warning 1.6 DEFAULT OR USER SETTING
On-Unit Log Capacity 24 DIVES
OceanLog PC Download OPTIONAL
OceanLog PC Settings Upload OPTIONAL
OceanLog Download Memory Capacity UP TO 150 DIVES**
Pre-Dive Planning Sequence PUSH BUTTON 30-190 ft / 9-57 m
On-Unit Simulator and Dive Planner NO
Temperature Display YES
User Reset / Power Off YES
Air Time Remaining Bar Graph YES
Nitrogen Tissue Loading Bar Graph YES
Oxygen Loading Bar Graph YES
Variable Ascent Rate Bar Graph YES
No Decompression Time Remaining Display YES
Air Time Remaining Display YES
O2 Time Remaining Display YES
Set Mode with Rapid Advance YES
Set “Turn Around” Pressure Alarm YES
Set “Ending” Pressure Alarm YES
Set FO2 Value (%) AIR, 21-100%
Set Audible Alarm On/Off YES
Set Max Depth Alarm YES
Set Elapsed Dive Time Alarm YES
Set Maximum Nitrogen Tissue Loading Bar Graph Alarm YES
Set Dive Time Remaining Alarm YES
Set Units Of Measurement YES
Set Time Format (12/24 Hour) YES
Set Time of Day YES
Set Date YES
Set Maximum PO2 Alarm YES
Set FO2 50% Default YES
Set Backlight Duration YES
Set Sampling Rate (OceanLog Download) 2/15/30/60 SECONDS
2/5/10 FT
Set Digital Gauge Mode On/Off YES
Set Water Activation On/Off YES
Warranty 2 YEAR

7 reviews for PROPLUS 4.0

  1. Grateful Diver

    Been diving with the ProPlus 3 for years, and was so excited when I heard the ProPlus 4.0 was coming out. Never used Bluetooth for much but man it’s handy syncing my dive functions and data with my cell phone.

  2. dakgreenmtnboy

    Just got the new 4.0 and love the blue tooth; makes things SO much quicker and easier. Fantastic so far!

  3. Dakgreenmtnboy

    Just got this and it is a breeze to setup and use. LOVE the bluetooth feature. Pretty much the same as the 3.0 with a bit larger readout.

  4. Dakgreenmtnboy

    Just got this a couple of weeks ago, it’s my new primary with the Geo 2.0 as a backup. LOVE the blue tooth functionality!

  5. GM

    Just ran the computer over multiple days and 9 dives. Matched it against my dive buddies computer from another vendor – the 22% bigger letters with multiple sub-widows was a joy and easy to use for older eyes. Really a great product.

  6. Scott McPhail

    This is my first dive computer and it is fantastic. Extremely easy to use and read in and out of the water. Bluetooth is great. I can transfer my dive info to my phone while still on the boat between and after dives.

  7. warrendreynolds

    Purchased this unit in May 2021. Used my damaged Proplus 2 with the trade in/up option. Easy to read at depth, great unit. Had one problem, very first time I attempted to disconnect the unit from the hose, when I reconnected it, I had a good air leak from the bottom of the computer. I confirmed the quick-connect attachment on the computer was tight and no debris was in the hose end, and the leak was still present unit about 1500 psi, then it would stop. I unscrewed the quick-connect base completely from the computer, reattached it and the leak stopped. Go figure, no more leaks.

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