Case model: 126529 LN
Bracelet model: 78HA09 Oyster
Category: Oyster Perpetual Professional

Case

Oyster case (monobloc middle case, screw-down case back
and winding crown and buttons)
Safety features
Crown guards integrated into the middle case
Material
18K gold
Middle case
18K gold, polished
Bezel
Monobloc black Cerachrom ceramic bezel with 18K white gold inlay, featuring a tachymetric scale; moulded graduations and numerals plated with platinum using PVD (Physical Vapour Deposition) coating technology; red ceramic numeral “100”
Case back
18K gold, anti-reflective blue crystal glass
Screw-down, finely fluted
Winding crown
18K gold, screw-down, with Triplock triple waterproofing system
Crystal
Scratch-resistant and anti-reflective blue crystal
Water resistance

100 metres (330 feet)

Movement

Rolex Calibre 4132
Mechanical chronograph movement with column wheel and vertical clutch
Self-winding via Perpetual rotor in both directions
Rolex Geneva stripes
18K gold rotor
Precision
Within -2/+2 seconds per day (after the movement is cased)
Functions
Central hour and minute hands; small seconds sub-dial at 6 o’clock
Central chronograph seconds hand
30-minute chronograph sub-dial at 3 o’clock, 24-hour sub-dial at 9 o’clock
Seconds-stop function for precise time setting
Balance and hairspring assembly
Frequency: 28,800 vibrations per hour (4 Hz)
Paramagnetic blue Parachrom hairspring
Rolex overcoil
Large-inertia adjustable balance wheel
Four gold adjustment nuts for precise time regulation
Balance bridge
High-performance Paraflex shock absorbers
Escapement
High-efficiency Chronergy escapement
Paramagnetic nickel-phosphorus alloy pallet fork and escape wheel
Oyster, three-piece solid links