ISA 8171/201 Quartz Watch Movement

The ISA 8171 is a Swiss-made quartz watch movement renowned for its multifunctional chronograph capabilities. Below are its technical specifications:

• Size: 11½ ligne (25.60 mm in diameter)
• Thickness: 3.70 mm
• Functions:
  • Chronograph with two sub-dials:
    • 60-second indicator at the 2 o’clock position
    • 30-minute counter at the 10 o’clock position
  • Central chronograph hand with 1/5 second increments
  • Date display at the 6 o’clock position
  • Small seconds at the 6 o’clock position
• Hands Dimensions:
  • Hour: 150 (1.50 mm)
  • Minute: 90 (0.90 mm)
  • Center seconds: 20 (0.20 mm)
  • Indicators: 16 (0.16 mm)
• Jewels: 0
• Battery: Uses a 395 battery
• Stem: 401-1493, Tap 10

This movement is commonly used in men’s chronograph watches and is appreciated for its reliability and precision