Omer-Sub MISTRAL Instruction Manual

1.0 Introduction

Read this instruction manual entirely, making sure you
fully understand the use and limitations of this
instrument. Improper use may cause serious injury or
death.
!IMPORTANT WARNINGS!
WARNING! OMERSUB recommends you get
proper certified training
breath holding diving and spearfishing. You are
the sole responsible for your own safety.
WARNING! This computer is a supplementary
device for properly trained free divers. The
information provided by this watch is FOR
REFERENCE ONLY and should never be used
as a primary source of information in planning
and/or executing sport dives.
WARNING! This computer, and the information
it provides, should in no case be considered a
substitute for certified freediving instruction or
training. Insufficient or improper training may
cause serious injury or death.
WARNING! This computer is solely intended to
provide secondary information for the free
diving activity. It should never be used for
scuba diving with tanks, or any other activity in
connection with commercial or professional
diving.
WARNING! Always use back-up instruments
such as a depth gauge, timer or watch.
If you have any questions about this manual, the above
warnings or the MISTRAL freediving computer, contact
your OMERSUB dealer before attempting to use this
computer inside or outside the water.
before attempting

2.0 Button and its Function

[EL]
[M]
DISPLAY

Current Time Mode

Mode Button [M]
▪
To select among the Current Time, Dive Recall, Chronograph,
Countdown Timer and Dual Time Mode.
▪
Hold to enter Setting Mode
Up/Start/Stop Button [U]
▪
To change the setting value or increase the set value
during Setting Mode.
▪
To activate the 'start' or 'stop' function during Chronograph and
Countdown Timer Mode.
▪
To change the sub-function display of Current Time Mode.
▪
To select dive record in Dive Recall Mode.
Down/Reset Button [D]
▪
To show the Daily Alarm.
▪
To change the setting value or decrease the set value during
setting display.
▪
To clear the value for the Chronograph and Countdown Timer.
▪
To select dive record in Dive Recall Mode.
EL Button [EL]
▪
Hold the [EL] button for 2 seconds to set the auto backlight
between ON and OFF.
▪
To turn on the EL back light for about 3 seconds.

Auto Backlight

▪
When Auto Backlight is set ON, the EL backlight will turn on for
3 seconds automatically when a key is pressed.
NOTE: The major key operations are summarized on the above
paragraphs, however please read the coming chapters for the detail
operations.
[U]
auto backlight
indicator
[D]
Auto Backlight