Nautilus Spearfishing – Miami Dive Shop

Suunto D4 is a full-decompression wristop dive computer designed to put information, ease of use, and style first. Its four operating modes, dive planning and analysis functions, and compatibility with optional Suunto Dive Manager PC software make Suunto D4 a great choice for those who value functionality and ease of use. Suunto D4 comes with a scratch guard that helps to protect the display against scratching.

With its innovative freedive functions and dedicated freedive mode, Suunto D4 is also perfect if you’re serious about breath-hold diving. Programmed to sample depth three times a second, Suunto D4 records highly accurate data on the true depth reached. Surface time and depth alarms help you make responsible decisions both in and out of the water.

In both Air and Nitrox mode, the clear, easy-to-read screen can display your current and maximum depth; current time, dive time, and decompression time; and temperature. Audible and visual depth and time alarms warn you when it’s time to start your ascent. In Nitrox mode, you can increase your time underwater by adjusting the oxygen content of your gas between 21% and 50% and adjust your PO2 limit between 0.5 and 1.6 bar.

Like other advanced Suunto dive computers, Suunto D4 uses the Suunto RGBM algorithm for decompression calculations. It also allows you to choose between taking traditional safety stops or, with the Deep Stops feature activated, taking your safety stops at depth. Before diving, the no-stop-time planner helps you prepare for your dive. Enter the planned maximum depth of your dive, and Suunto D4 will tell you how long you can dive before needing a decompression stop. After diving you can instantly review all the data in the logbook. Suunto D4 is also compatible with the optional Suunto Dive manager PC software, which provides more in-depth analysis and graphical representation of all your dives.

$500.00

The Immersion Prowler. It’s a digital
data logger, dive computer, and full-featured
watch, all in a 200m (660ft) water-resistant
housing.
Features:
Stainless steel case with rubber side guards.
Integrated rubber strap with machined buckle and clever strap
retainer. It’s also long enough to easily go over a 1cm wetsuit.
Swiss-made depth sensor.
Dive mode which starts automatically by the pressure sensor on
the left side (more on this below). In dive mode, it logs the min
and max depths for each dive.
Always-visible temperature sensor, in Celsius or Fahrenheit.
Film supertwist nematic LCD. These are the ones with a brilliant
green hue from certain angles which makes it very readable.
Electroluminescent backlight for the entire display.
Battery life indicator. Around the outside of the dial from about
5:30 to 9:30, there is a 11-bar battery “gas gauge” that shows
remaining battery life. In a safety-critical item like a dive
computer, this is a great feature.
In dive mode, the backlight comes on automatically when you tilt
your wrist, as do many Casio G-shock watches. Nice touch.
The dive log records a total of 50 dives, with log date & time,
max depth, min depth, and temperature at each recorded data
point.
Sleep mode. You can have the display turn itself off after a
configurable interval, to be instantly activated on any button
press. Also an excellent idea, especially for a watch that you may
only break out a few times a year.
Fast ascent warning. An alarm warns you that you are surfacing
too rapidly and are risking the bends.

There is also a full complement of digital watch features:
Dual time zones, easily toggled from the main display by holding
down a button.
Three alarms.
Stopwatch.
Multi-mode countdown timer.
Simultaneous display of H/M/S as well as day, date, and year. As
Christian never tires of preaching, this is surprisingly useful.
Dive mode is actually two modes: free dive, or deep/scuba. In free dive
mode (which the watch is primarily recommended for), the Prowler
displays the surface interval, one of the variables in avoiding the
Taravana bends; in scuba mode, it displays dive start time instead. In
either mode, it keeps (and logs!):
Total dive time.
Maximum depth.
Actual depth.
Minimum temperature.
Date and time of the dive.
Submerged descent speed.
There’s a wide spectrum of dive computers/watches, ranging from
minimal to full-blown computers with bitmapped displays and USB
interfaces (like the Suunto D9). The Prowler sits squarely the middle in
that a lot of info is logged, but it doesn’t have the USB interface or onscreen
plots of things like depth vs time. Which you prefer probably
depends on how you dive, and how often. And, as previously mentioned,
the Immersion Prowler is primarily recommended for free diving.
The dive mode is triggered automatically by two sensors hidden under
the left rubber bumper. There’s a conductive water sensor, and the
Intersema pressure sensor. Once the water sensor activates, the watch
waits for 1.15atm of pressure, and then starts dive mode. Very cool!
So how is it to wear on dry land? I found it to be pretty comfortable
with one minor caveat: it’s a large watch, about 50mm at the widest
point, but low-to-medium weight (120g) due to the use of rubber on the
strap. The contoured strap is comfortable and keeps the watch in place
on the wrist without shifting around, and the general look is that of a
sports/fitness/outdoors watch, not too different from a Pathfinder or
perhaps a G-shock.

$394.99

The Aeris F10 Freediving Computer was designed by freedivers for freedivers. The F10 Freediving Computer by Aeris is ideally suited for all types of breath-hold diving, spear fishing or freediving, recreational to competitive.

The Aeris F10 Freediving Computer also features a surface interval alarm which is very beneficial during my interval training for competitive freediving. It has a unique safety feature of an on-going stopwatch so whilst in-water my running time does not get erased if the computer becomes submerged- unlike with any other freediving computer.

Freedive Mode Main displays Depth and Elapsed Dive Time with access to either a pre-set countdown timer or lap timer
User defined surface recovery timer, repeating elapsed dive time alarm, repeating depth interval alarm and 3 max depth alarms – with flashing LED and auto-backlight illumination
99 dive log with Max Depth, EDT, Surface Interval
:01 step profile scroll EDIT and Depth
History Mode including total EDT and number of dives, Max depth ever with its EDT, Longest EDT ever with its Max Depth, Average Max Depth, EDT, and number of dives per day
Digital watch functions including alternate time zone, chronograph, daily alarm, and countdown timer
Optional PC Downloadable with 1 second sampling rate
The F10 Freediving Computer by Aeris offers User-Replaceable Batteries.

$370.00