ROLEX REF. 116520 BLACK DIAL DAYTONA STEEL
Rolex, "Oyster Perpetual, Superlative Chronometer, Officially Certified,
Cosmograph Daytona" case No. P607471, Ref. 116520. Made in 2000
Fine, self-winding, water-resistant, stainless steel wristwatch with round
button chronograph, registers, tachometer and a stainless steel Rolex
Oysterlock bracelet Ref. 78490.
Three-body, polished and brushed, screwed down case back, push-buttons
and crown, Triplock winding-crown protected by the crown guard,
tachometer graduation on the bezel to 400 units per hour, sapphire
Black with applied luminous white gold indexes, subsidiary silver ring
dials for the seconds, the 12-hour and 30-minute registers, outer minute
and 1/5th seconds division. Luminous white gold baton hands.
Cal. 4130, rhodium-plated, 44 jewels, straight-line lever escapement,
monometallic balance adjusted to 6 positions, shock absorber, self-compensating
free-sprung Breguet balance spring, Microstella regulating
screws, hack mechanism.