IWC REF. 3713 SPLIT SECONDS CHRONOGRAPH STEEL
International Watch Co., Schaffhausen, Doppel Chronograph,
Automatic, case No. 2609606, Ref. 3713. Made in the 1990s.
Fine, water-resistant, self-winding, stainless steel wristwatch with round button split-seconds chronograph, registers, day
and date and a stainless steel IWC link bracelet with concealed
deployant clasp.
Two-body, polished and brushed, concave lugs, stepped bezel,
screw down case back and crown, push-button at 10 is for
the split-seconds chronograph function, sapphire crystal.
Matte black with white Arabic numerals and luminous indexes,
outer 1/5th seconds track with 5-minute/seconds Arabic
markers, apertures for the date and the day, subsidiary dials for
the seconds, 12-hour, and 30-minute registers. Luminous steel
baton hands.
Cal. 79230, rhodium-plated, 29 jewels, straight-line lever
escapement, monometallic balance, self-compensating fl at balance
spring, shock absorber, index regulator, hack mechanism.