Waterproof watches of this category are carried exclusively as safety
clocks to the time alignment beside the deepmeter watches!
- Professional helium valve on 9:00 o'clock,
in order to be able to lead during external pressure
emerging) the accumulating helium fast enough
from the clock
central second indicator
- Date indicator at 3:00 (quick winding with
the crown on 4:00 at Pos. 1 clockwise rotation)
high quality automatic movement with 21 jewels
- professional one side rotating bezel system
special coated luminous hands and digitsn "night
XL- casesize 52 mm; thickness 15,5 mm; all stainless steel
special "Polygon" screwed crown ,
1000m "3280 feet" water resistant
"moderate temperature assembled"
high quality diver Strap "Macuraflex" ( max. arm
The helium valve is especially for occupation diver interesting, who are
held also in air environment on pressure. Helium atoms are so little that
they can penetrate through sealings into the clock and can construct an
interior pressure. This is further not tragically - if all helium atoms
could leave in outside pressure reduction quickly enough the clock.
For this case we add this special valve, which lets the helium-atoms again
outward, otherwise it would come to an explosion of the clock!