Audemars Piguet Royal Oak Concept GMT Tourbillon Instructions For Use Manual - page 9
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Treatments and finishes
Of course, other materials are also used to make the
various parts that make up the movement. But this
watch stands out more than anything for the way
the visible parts are finished : brushed and smudged
lines, all-black finish (galvanic coating) or shot-
peened (satin-polish finish).
Finishes which turn the Royal Oak Concept GMT
Tourbillon into a firmly sporty and modern watch in
appearance.
Movement :
• Titanium middle-case
• Black ceramic crown and push-piece
Dial side :
• Nickel silver bridges with all-black galvanic finish
• Blackened balance
• Black ceramic bezel
• Sapphire crystal with double-sided anti-reflection
coating
Caseback side :
• Central nickel silver bridge with all-black galvanic
finish
• Titanium sapphire caseback
• Sapphire crystal with anti-reflection coating on
one side