Gruen N710SS

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Basic Information

NameGruen N710SS
ManufacturerGruen
Launch Year1960
Caliber FamilyDescription
early fixed, later mobile stud carrier:
710 : sub second
710SS: sweep second
710CA: sweep second, date

new mobile stud carrier:
N710 : sub second
N710SS: sweep second
N710CA: sweep second, date

minor detail modifications:
712SS: sweep second
712CA: sweep second, date

thinner automatic:
711SS: sweep second
711CA: sweep second, date
711CD: sweep second, day, date

new substantially thinner automatic:
730SS: sweep second
730CA: sweep second, date
731CD: sweep second, day, date
suffix R: Incabloc in calibres also made without shock protection

Related calibers
Gruen 710, Gruen 710CA, Gruen 710RSS, Gruen 710SS, Gruen 711CA, Gruen 711CD, Gruen 711SS, Gruen 712CA, Gruen 712SS, Gruen 730CA, Gruen 730SS, Gruen 731CD, Gruen N710, Gruen N710CA, Gruen N710SS
Is COSC certifiedNo

Technical Details

Lignes Dimensions11.5 ‴
Dimensions26 mm
Height6.3 mm
Further MeasuresMounting Diameter (Dm): 25.6mm
Power Reserve44 hours
Frequency18,000 vph
Jewels25

Complications and Specifications

ShapeRound
Complications
  • Sweep Second
Shock ProtectionIncabloc
Regulator TypePinned Regulator (or Index Regulator)
Movement TypeAutomatic
Rotor TypeCentral Rotor
Escapement TypeSwiss Lever
Control TypeBalance Wheel
Winding TypeAutomatic (Rotor-Driven)
Setting TypeStem Set (Crown Pull)

Additional Information

Hand Sizes1.40 x 0.80 x 0.25mm
Hand Count3
Country Of ManufactureSwitzerland
NotesOther data: balance staff: U3046 stem: W3029
Ranfft mentioned about this caliber: There are variants with this quantity of jewels 17, 25
Signatureca. 1960: GXC, Gruen Watch Co, N710SS, Precision, Swiss, Unadjusted, 17 Jewels; Incabloc
Import Codes

Metadata

Created AtSep 15, 2023
Updated AtApr 23, 2025, 11:32:53 PM