Dive Computer Expert Reviews
Saving Your Precious Time And Finding The Best Dive Computer For You

Dive computer reviews are perfectly organized and consist of fully researched information and ratings of Aeris, Cressi, Mares, Oceanic, Sherwood, Suunto, Tusa, and UWATEC/ScubaPro brands.  In Catalogue Section you may compare any models side-by-side and select dive computer according to your needs! Join thousands of happy customers!


Sleek And Affordable Sherwood Amphos -  New Favourite In Recreational Diving

Sleek And Affordable Sherwood Amphos - New Favourite In Recreational Diving

Sherwood Amphos is a multifunctional dive computer with 4 dive modes and support of 2 Nitrox mixes. It has all features we want to see in instruments of this class and besides that it has perfect price-functions ratio. This may be a good news for divers who cannot afford investing in more expensive device with the same number of functions.

General Information
User Interface
Your Review



Sherwood Amphos is the first dive computer made by Sherwood Scuba, which supports diving with double-nitrox mix. For the 1st mix we may set FO2 up to 50% and for the 2nd - up to 100%. This feature gives the user possibility starting diving with technical mixes (excluding Trimix, of course) and grow as a technical diver.

Amphos was designed with standalone digital wrist watch functions. It looks a bit bigger than usual wrist watch, but it sits very comfortable on your wrist during everyday wearing. And it is very favourable thing for those guys who needs watch and dive computer functions in one sleek body.

Instrument inherited after Sherwood Wisdom large, intuitive display, and user-friendly interface. It has pretty easy setup and well-structured user manuals.


Sherwood Amphos Features Card

Copy this Sherwood Amphos Key Features & Alarms Card for your Reference and Share with your friends and buddies!


Sherwood Amphos may be a good contestant among other double-nitrox mix dive computers, like Oceanic VEO 3.0 and Tusa ZEN.



Benefits of using Sherwood Amphos dive computer

  • you will be an owner of stylish wrist watch and multifunctional dive computer made in one sleek body;
  • you will be able to start your tech-diving career with the help of this Sherwood dive computer;
  • you will enjoy different modes, including freediving as well;
  • you will get intuitive and user-friendly dive computer;
  • you will be able to replace battery yourself with ease;
  • you will manage your finances well by investing in Amphos!







User Interface
4 buttons
Dive Modes
Air, Nitrox, GAUGE, FREEdive
Standalone Digital Watch
Integrated Digital Compass
modified Haldanean
Number of Gas Mixes
Air, 21-100%
1.2-1.6 ATA
Air Integration
Safety Stop (SS)
Deep Stop (DS)
Conservative Factor
Altitude adjustment
Dive Planner
9-57 m
Logbook Capacity
24 the most recent dives
Max Operational Depth
100 meters
Backlight duration
ON/OFF/5/10 sec
Sampling Rate
2/15/30/60 sec
User Replaceable Battery
Data Retention
PC Interface
2 years










Like in most dive computers that have standalone digital watch functionality, Sherwood Amphos is designed with 4 buttons user's interface. They are big enough and comfortable to press even in thick gloves.

Display is divided into 3 sections: top, middle, bottom. Viewable area is large to show all necessary data by displaying big and sharp digits.

Dive computer has two bar graphs to display nitrogen loading/oxygen toxicity and ascent rate:

  1. Nitrogen loading bar Graph (NiBG) – shows NO-DECO/DECO status: when you go deeper and dive time increases, segments will be added to NiBG, and when you ascend and swim in shallow waters – amount of segments decreases therefore giving you more time to stay underwater; NiBG consists of 3 zones: NO-DECO/Caution/DECO;
  2. Ascent Indicator Bar Graph (ASC) – represents diver's ascent rate at certain depths







Before diving, we will program certain dive mode and all related to it desirable parameters. Dive computer has 4 Set Groups:

  1. Set F Group (FO2):
    • FO2 Mix 1 - Air, 21-50%;
    • FO2 Mix 2 - Air, 21-100%;
    • FO2 Default - ON/OFF;
  2. Set A Group (ALARMS):
    • alarms - ON/OFF;
    • Ascent alarm - ON/OFF;
    • Depth alarm - ON/OFF/9-99 meters;
    • NiBG alarm - ON/OFF;
    • Dive Time Remaining (DTR) alarm - ON/OFF/5-20 min;
    • Elapsed Dive Time (EDT)alarm - ON/OFF/10-180 min;
    • PO2 alarm - ON/OFF/1.2-1.6 ATA;
  3. Set U Group (UTILITIES):
    • wet activation - ON/OFF;
    • units;
    • Deep Stop - ON/OFF;
    • Safety Stop - ON/OFF;
    • Conservative Factor - ON/OFF;
    • backlight - ON/OFF/5-10 sec;
    • sample rate - 2/15/30/60 sec;
  4. Set Time Group (Date/Time):
    • main and alternate time;
    • daily alarm;
    • hour & hour format;
    • month & year;
    • day;
    • CDT;
    • Chronograph


Sherwood Amphos dive computer has Dive Planner that works for ranges 9-57 meters. If I plan repetitive dives - planner will calculate available NO-DECO time according to my nitrogen intake, oxygen toxicity from previous dives, and surface interval.

This Sherwood dive computer inherited all the best features from Wisdom 2 & Wisdom 3 user interfaces and menu sets. They are logically structured and followed one after another. We didn't find even slightest issues with setting this instrument.







Sherwood Amphos: Diving With Air & Nitrox

As a dive computer, Sherwood Amphos operates in 3 modes:

  1. Normal mode – when you set it for Air or Nitrox;
  2. GAUGE mode – in this mode it functions as a depth gauge and timer only and doesn’t perform calculations for nitrogen absorption and oxygen accumulation;
  3. FREEdive mode – this mode is for diving without scuba gear


Amphos starts selected dive mode at the moment when it senses depth of 1.5 m, if diver set wet activation to ON.

Dive computer has main and alternative displays with all information related to type of dive, No-Decompression or Decompression conditions, also it warns the diver with Deep and Safety Stops (if set to ON before), and any violations that he/she may have. Also diver may switch mixes during the single dive with the easy procedure.


Sherwood Amphos NO-DECO Card

Copy this Sherwood Amphos NO-DECO Displays Card for your Reference and Share with your friends and buddies!


To access alternative displays whether you are in NO-DECO/DECO modes, at Safety or Deep stops - press A-button for less than 2 sec. To see Mix Switch preview display - press M-button for 2 sec, and to activate backlight - press L-button. User interface in this Sherwood dive computer is very user friendly and easy to learn all button combos.


Scuba dive computer displays Dive Time Remaining (DTR) by monitoring your current depth, oxygen accumulation, No-Decompression status. It shows you not only your DTR at certain depth in minutes, but also displays status on NiBG by adding or taking away segments and O2 saturation (if set for Nitrox dive) on O2BG (NiBG and O2BG - the same bar graph that is shared between nitrogen and oxygen conditions).


When you dive with compressed air – you have 79% of nitrogen and 21% of oxygen approximately. If this is the case – your tissues absorb nitrogen and Dive Time Remaining (DTR) is shown according to nitrogen loading.
If you set Amphos for Nitrox – dive computer performs calculations in different way. You have different percentage of nitrogen and oxygen and your body responds differently to such a gas mix. In this case diver is exposed to oxygen toxicity. When amount of time remaining before he/she reaches O2 limits becomes less than No-Decompression (NDC) Time Remaining at certain depth, dive computer starts calculations for that depth regarding to O2 and Oxygen Time remaining (OTR) will be displayed as Dive Time Remaining on the main display.

If you need to switch between gas mixes – it is easy to do – just use combination of M-button (Mode) and S-button (Select) buttons. Mix switching can be done only from Gas Switch Preview screen, which can be accessed from Dive Main display by pressing M-button. Sherwood Amphos has one of the easiest gas switching procedure around multigas dive computers.



Lee M.
"... Sherwood Amphos is my first dive computer with double gas mix and I just started diving with double mix option. I wasn't very confident at the beginning, but with dive computer's easy switch mixes sequence and intuitive display I did it without any hassle..."



Decompression mode starts when a diver exceeds theoretical No-Decompression limits of time and depth. If this happens – Sherwood Amphos activates an alarm, and all 5 segments on NiBG are filled up and flashing, UP Arrow icon will flash too, and you will see big DECO notation on the lower section of the display.
At that time you need to ascend to required Stop Depth that is shown on the display or slightly deeper and stay for decompression for certain Stop Time, which is displayed too.

Below is an example of main DECO mode display:

  • current depth;
  • Total Ascent Time (TAT);
  • Stop Depth and Stop Time;
  • NiBG with 5 segments filled up;
  • all applicable icons


Also, if diver makes any violations (ascending shallower than required and stay there for some time) – Sherwood Amphos will turn corresponding violation mode and show information related to each kind of violation with appropriate values, Bar Graphs, icons, and graphics.


Sherwood Amphos: Diving In GAUGE Mode

If scuba computer set for GAUGE Mode – it will work as a depth gauge and timer and does not perform calculations for nitrogen and oxygen accumulation, and it will be locked to this mode for 24 hours if dive in Gauge mode was completed.

Below is a representation of information from main and alternative displays, related to GAUGE:

  • current depth;
  • max depth;
  • Elapsed Dive Time (EDT);
  • Ascent Indicator (ASC) while ascending;
  • time;
  • temperature


Sherwood Amphos: FREEdiving

As dive computer may be used for freediving activities, you need to set some specific parameters for this sort of diving:

  • Count Down Timer (CDT) and toggle it (ON/OFF) while diving by pressing S-button;
  • Elapsed Dive Time (EDT) alarm – ON/OFF (factory set for 30 sec);
  • 3 Free Depth alarms, each alarm goes for progressively deeper depth


In a Freedive mode Sherwood Amphos works as a depth gauge and nitrogen calculation is based on the default FO2 of Air and the amount that you may have after previous dives from the last 24 hours.

Below is a representation of information from main and alternative displays:

  • current and max depths;
  • Dive Time Remaining (DTR) with No-Decompression (NDC) icon;
  • Elapsed Dive Time (EDT);
  • Nitrox Loading Bar Graph (NiBG), if you still have any remains of nitrogen from the previous dives;
  • temperature;
  • time;
  • Remaining Countdown Time, if Countdown Timer is ON on ALT#1 display


Freediving has its specific displays and set of alarms, like:

  1. CDT alarm - by reaching 00:00 dive computer beeps on you;
  2. Free dive Elapsed Dive Time (EDT) alarm – different from EDT in Air and Nitrox modes;
  3. Free dive Depth (FDA) alarms – you may set 3 depth alarms, each at progressively deeper depths;
  4. NiBG alarm – if you have nitrogen accumulated from previous dives and it increases to Caution Level (4 NiBG segments) during freediving – you will have audio alarm that goes on and 4 segments are flashing on NiBG.


If nitrogen intake increases to Deco level and all 5 segments are filled up – you will have audio again and computer enter Violation Gauge mode for 24 hrs.

Back to Top







After the Transition Period of 10 minutes I had an access to the following data and modes:

    1. FLY mode - Time to Fly Countdown Timer;
    2. DESAT mode - Time to Desaturation Countdown Timer;
    3. Dive Planner – this function allowed me planning next dive-sessions and seeing for how long I could stay underwater safely and at what depth, according to my current nitrogen accumulation and oxygen toxicity;
    4. Logbook Mode – it stores data of your 24 most recent dives (battery removal does not make any affect on Logbook memory);
    5. History Mode – accumulates information, like number of dives, number of dive hours, and Max depth achieved from all my previous dives with Air, Nitrox, or in GAUGE mode (battery removal does not make any affect on History memory); freedives are not recorded in the viewable mode, but we may use software to download freedive history to our PC;
    6. PC interface – this function allows you to upload settings and download data from Sherwood Amphos to PC by using special optional cable and software







Sherwood Amphos: What Divers say


  • easy set up and dive with after learning the good manual;
  • great wrist watch and full of functions;
  • gives a lot of information underwater and on surface;
  • easy procedure switching between gas mixes;
  • stylish, durable and comfortable as a dive computer and wrist watch


We were pleased using and diving with Sherwood Amphos. It inherited only the best things from all range of Sherwood dive computers! It has everything that just spot-on inside one stylish and robust package! I worn it as a wrist watch between dive sessions, going to local cafe-shops and tennis courts. It wasn't bulky, and gave me a sensation of being ready to jump into water right away!

All set up process went smoothly - user interface and manuals were perfect. I loved large display with all essential data shown, and extra info was easy to call up. Switching gases was easy to perform as well. 

Number of features on this dive computer related to its price is pretty great! I think Amphos will take place as a favourite for recreational divers, and not only experienced, but for the starters as well.

I liked that this dive computer is capable of being customized for different diving situations and it is a big benefit for those guys who want to dive different scenarios, like air and nitrox, or gauge and freediving, and at the same time it provides us with everithing to keep us safe!


Sherwood Amphos dive computerSherwood Amphos
Dive-Computer-Wizard Rating
golden star golden star golden star golden star golden star


If you are a beginner in scubadiving or experienced recreational diver, and you need a reliable, robust, solid, stylish multitasking dive computer with standalone wrist watch functions, and at the same time you need to save money - I definitely recommend Sherwood Amphos dive computer as your buddy!



Add comment
Alanis, 30 August 2013 09:32
Great All-In-One Dive Computer

I bought Sherwood Amphos for freediving mainly, as I dive with Nitrox just occasionally. I didn't want to buy separate dive computers for freediving and scubadiving. And this Sherwood dive computer was good enough to satisfy all my needs.

I've been diving with it for 1 year and it never failed me. Freedive mode has all alarms and dive data to keep me aware. And 2 gas mixes is more than enough for me to enjoy different diving styles. Sherwood Amphos has convenient user interface that I had to learn before diving, as dive computer pucked with many functions. I love its large display with sharp digits. Backlight is strong and alarms are pretty loud.

Sherwood Amphos is a great overall dive computer and I recommend it for every recreational diver with freediving in mind!

Lee M., 15 June 2013 00:00
Great Sherwood Amphos As My First Dive Computer

I've bought Sherwood Amphos as my first dive computer and used it for a week of Nitrox diving in Coz. I had no problem following the manual and learning how to set and dive with it. It is easy to read, interpret and operate after spending about two hours with the instruction docs and Amphos.

It is my first dive computer with double gas mix and I just started diving with double mix option. I wasn't very confident at the beginning, but with dive computer's easy switch mixes sequence and intuitive display I did it without any hassle.

It sits great on my wrist and works perfect during onshore wearing as a wrist watch too.

I highly recommend Amphos as a first computer.

Add comment