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5
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Insert one type Duracell DL2450 (or
equivalent) battery.
2 batteries are provided; 1 is a spare.
The battery should only be inserted with the
“+” side up, i.e. toward the buttons.
Do not let metal of any kind to come in
contact with the battery, and do not allow
two batteries to touch each other.
The Neptune will only be waterproof if you fit
the o-ring into the groove in the battery
cover.
This can be an awkward task and you may
wish to use silicon grease or petroleum jelly
to help hold the o-ring in the grove.
If you never jump near water you can leave
the o-ring out.
Replace the two screws, but DO NOT
OVERTIGHTEN! This can crack the battery
cover and cause the unit to lose water
resistance.
You can press the battery cover down to seal
the o-ring to the body of the unit for
maximum water resistance.
WARNING
PARACHUTING IS A HAZARDOUS ACTIVITY THAT CAN RESULT IN INJURY OR DEATH.
An altimeter is a device subject to malfunction, even when properly designed, built, assembled, maintained and used. Do not
rely upon an altimeter for your safety. Your altimeter must only be considered as an aid when checking your altitude.
A visual cross reference with the ground should be used in combination with any altimeter.