Luminox 1500 Series - Manual (Page 4)

• Magnetic resistance. This is tested by 3 exposures to a direct current magnetic field of
4,800 A/m. The watch must maintain its accuracy to +/- 30 seconds/day as measured
before the test despite having the magnetic field.
• The presence of clearly distinguishable minute markings on the watch face.
• Adequate readability/visibility the watch should be read from a distance of 25 cm (9.84 in)
in total darkness.
• Shock resistance. This is tested by two shocks (one on the 9 o‘clock side, and one to the
crystal and perpendicular to the face). The shock is usually delivered by a hard plastic
hammer mounted as a pendulum, specifically, a 3 kg hammer with an impact velocity of
4.43 m/sec. The change in rate allowed is +/- 60 seconds/day.
• Chemical resistance. This is tested by immersion in a 30 g/l NaCl solution for 24 hours to
test its rust resistance. The testing water has a salinity of ocean salt water.
The Luminox Deep Diver not only passes all these tests but actually exceeds many of the
minimum requirements set forth by ISO 6425, such as the visibility requirement, not to
mention the new bezel locking system.
Why the automatic Helium Release Valve?
During prolonged dives in pressurized environments (like diving bells, deep sea exploration
vessels and more) which use a helium-rich air mixture, tiny helium molecules can get inside
the watch. If decompression stops during ascent are not long enough, the gas in the watch
doesn’t have time to release and the pressure which builds up can damage the watch. With
Luminox’s automatic helium release valve, excess pressure is released automatically through
a one-way valve, protecting the watch.
Why the Special Locking Rotating Bezel:
The patent pending Luminox Bezel Locking System prevents the bezel from changing position.
A conventional unidirectional bezel is great, but if knocked, it could be moved indicating
less time remaining under water. Divers prefer to stay down as long as they safely can,
and need as much time as they can for deep diving. This newly invented Bezel Locking
System ensures that the time the diver sets with the turning bezel will stay set, and is easily
accomplished by simply locking the crown protector into position.