Omega 8500 / 8501
COMMON SPECIFICATIONS
BASIC
- Omega manufacture calibres 8500 / 8501
Co-Axial escapement
- Self-winding movement in both directions
- Officially certified chronometer
- Jewels : 39 Frequency : 25’200 A /h (3.5 Hz)
- Power reserve : > 60 hours
- Diameter : 13 ’’’ (29.00 mm)
- Time zone function
FINISH
- Geneva waves in arabesque, world’s première
- Circular graining
- Mainplate diamond polished ; sides of bridges
diamond polished and chamfered
- Red varnished engraving
- Blackened screws, balance wheel and barrels
TECHNICAL ADVANTAGES
- New generation of Co -Axial escapement
○ 13 % bigger volume
- better chronometric performance
○ Co-Axial wheel with 3 levels : impulse wheel,
impulse pinion and drive pinion ( functions
dissociated )
- optimisation of individual functions
( gearing and impulsion )
- Omega free sprung-balance system :
○ without index
- less sensitive to shock perturbations
- balance wheel with 4 micro regulating screws
in 18 Ct white gold
- precise adjustment of the rate
- new patented hairspring-stud fitting system
with twisted spring end
- precise definition of the active length of
the balance-spring
○ transversal balance bridge with an invisible
screw
- easy adjustment of the axial play of the
balance
- 2 barrels with anti-wear DLC ( Diamond Like
Carbon ) coating mounted in series : “ barrel
one ” with bridle ( manual ) and “ barrel two ”
with slipping bridle ( automatic )
- guaranteeing maximum energy with
minimum volume, thus better stability of
amplitude
- allowing modular integration of additional
complications without altering the chronometric
performance
- NIVACHOC, new generation of shock-absorber
- its geometry repositions the balance in all
circumstances
- Time zone function
- hour-hand setting without stopping the
watch
- automatic date change at midnight
- date adjustment forwards and backwards
- Self-winding mechanism in both directions
with the use of Zirconium slide-bearing
- optimal winding speed
- self-winding without noise
- suitable for all user types
http://people.timezone.com/staff/Damon/HourVision.pdf
