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Rolex Caliber 4161

TECHNICAL DATA

Brand:	Rolex
Family:	Rolex > Rolex Calibers
Reference:	4130
SKU:	Rolex4161
Name:	Rolex Caliber 4161
Produced:	2013 In production

Country of Manufacture	Swiss Made, Switzerland

FUNCTIONS

Base	Rolex Caliber 4160
Movement type	Self Winding
Certification	COSC Chronometer Certified
Functions	Chronograph, Hacking stop, Regatta countdown
Chronograph	Column wheel, 60-second counter, 10-minute countdown timer
Display	5 hands, Central seconds chronograph hand, Small seconds hand at 6:00, Central hour hand, Central minute hand, Central 10-minute countdown hand
Power reserve	72 h
Jewel	44
Frequency	28,800 vph (4Hz)

DIMENSIONS

Diameter	30.5 mm
Lignes	13½ "'
Thickness	12.4 mm

ADDITIONAL INFORMATION

Escapement	Swiss lever
Anti-Shock System	Paraflex
Rotor style	Ball-bearing, Central rotor
Rotor winding direction	Bi-directional
Balance	Free-sprung, Glucydur
Balance Spring	Breguet, Parachrom Blue
Lift Angle	No Information
Number of parts	360

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Detailed description

The Rolex caliber 4161 was introduced at Baselworld 2013 in the all steel/blue Cerachrom bezel upgrade of the Yacht-Master II (116680). The first series of gold Yacht-Master II watches (ie: 116688 and 116689) used the previous caliber 4160. The purpose of the features in the 4161 is to time regatta boat races where the starting sequence can last up to 10 minutes.

The 4161 is based on the Rolex Daytona’s caliber 4130 chronograph movement. It has a column wheel and vertical clutch for allowing the chronograph to start instantaneously.