ETA G10.211 – Technical Communication

Overview

• Caliber: ETA G10.211

• Movement Type: Quartz chronograph with central hours and minutes, 1/10-second, 60-second, and 30-minute counters, plus date function

• Jewels: 4 synthetic jewels

Dimensions

• Diameter: 13¼ lignes (approximately 29.80 mm)

• Movement Thickness: Approximately 5.12–5.20 mm

• Total Height: Approximately 7.40 mm to top of the seconds pinion

Display and Timing Functions

• Main Time: Hours, minutes, central sweep seconds

• Chronograph Counters:

  • 1/10-second

  • 60-second (central or subdial, depending on model)

  • 30-minute totalizer

• Chronograph Modes:

  • ADD (cumulative timing)

  • SPLIT (intermediate timing)

Date Function

• Date Position: Available at 3, 4, or 6 o’clock, depending on model variant

Battery and Power

• Battery Type: Silver-oxide 394 cell

• Battery Life: Approximately 30 to 38 months under normal use

• Operating Voltage: 1.55 V

• Stop-Second (Hacking) Feature: Seconds hand stops when the crown is pulled to the setting position

Hands and Stem Compatibility

• Hand Hole Sizes:

  • Hour: 1.50 mm

  • Minute: 0.90 mm

  • Central seconds: 0.25 mm

  • Subdial hands: Approximately 0.20 mm

• Stem Type: Tap 10, typically ETA 401-1497

Service and Functional Notes

• Chronograph Reset:

  • Standard reset using pushers

  • Manual zero-setting may be required if hands do not return to zero after reset

• Accuracy and Temperature Range: Standard for ETA Fashionline quartz modules

• Replacement Model: Superseded by ETA G10.212, which shares the same physical and functional dimensions

Technical Summary Table

Notes for Watchmakers

1. Verify case compatibility with movement height (~7.40 mm).

2. Use correct stem length and threading (Tap 10) to ensure proper crown engagement.

3. Reset chronograph hands carefully to avoid alignment issues; use the manual reset procedure if needed.

4. Always replace battery with 394-type to maintain optimal power and EOL performance.

5. ETA G10.212 can be used as a direct replacement without case or dial modifications.

Conclusion

The ETA G10.211 is a durable and well-established Swiss quartz chronograph movement. It combines essential chronograph functions with long battery life, standard dimensions, and ease of servicing. Its successor, the ETA G10.212, ensures forward compatibility without changing platform requirements.