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This is an ETA 6497-1 manual-wind mechanical movement, sized at 16½‴ (36.60 mm diameter) with a height of 4.50 mm, Made in Switzerland. It features a classic Lépine layout with hours, minutes, and small seconds at the 9 o‘clock position . Known for its simple construction and robustness, this movement is an ideal platform for watch enthusiasts and repairers to learn mechanical movements, and is widely used in watches from brands such as Panerai .
| Feature | Description |
|---|---|
| Brand | ETA (Swatch Group, Switzerland) |
| Caliber | 6497-1 |
| Movement Type | Manual-wind mechanical |
| Size (Ligne) | 16½‴ |
| Diameter | 36.60 mm |
| Height | 4.50 mm |
| Jewels | 17 |
| Beat Rate | 18,000 vph / 2.5 Hz |
| Power Reserve | Approx. 46 hours |
| Lift Angle | 44 degrees |
| Functions | Central hours, central minutes, small seconds at 9 o’clock |
| Hacking | No |
| Shock System | Incabloc or Novodiac |
| Winding Direction | Uni-directional |
| Origin | Made in Switzerland |
| Key Features | Simple construction, easy to service, robust and durable |
| Instruction | Details |
|---|---|
| Winding Method | Rotate crown clockwise for manual winding. From fully stopped to full wind requires approximately 365-386 crown turns (about 55-60 rotations) |
| Winding Feel | The 6497-1 has a crisp, pleasant winding sound and excellent feel |
| Time Setting | Pull crown to time-setting position, rotate clockwise to set time. Note: This movement does not hack – the seconds hand continues to run |
| Power Reserve | Runs for approximately 46 hours when fully wound |
| Regular Maintenance | Professional service recommended every 3-5 years |
1. Install Dial Align dial with movement positioning posts, gently press into place, tighten dial screws
2. Install Hands Install hour, minute, and small seconds hands in sequence. Hand hole sizes: Hour 2.00 mm / Minute 1.15 mm / Seconds 0.28 mm
3. Install Winding Stem Insert winding stem into movement, press setting lever and push into place. Stem thread is 1.20 mm
4. Case Fixing Place assembled movement into case, secure with movement ring or screws
5. Install Crown Install crown, test time-setting function
6. Final Test Wind the movement, observe smooth hand movement
Important Note: This movement is originally designed for small seconds (9 o‘clock). Converting to center seconds increases movement height, which may prevent the case back from closing properly .
| Aspect | Guidance |
|---|---|
| Service Interval | Professional service recommended every 3-5 years |
| Common Issues | Movement “freezes” or locks up when wound – check wheel train alignment, broken pivots, or damaged escape wheel pivot tips |
| Train Inspection | Before tightening bridge screws, verify all wheels rotate freely with a puff of air. Tighten screws gradually, testing after each |
| Lubrication | Use specialized watch oils – precise lubrication on all jewels and escapement |
| Cleaning | Use specialized cleaning solution and ultrasonic equipment; avoid corrosive cleaners |
| Key Part Numbers | Mainspring: 1.50 × 0.18 × 15.0 mm ; Winding stem: 1.20 mm thread ; Incabloc shock settings: available for top and bottom |
| Case Compatibility | With a 36.6mm diameter, this movement fits watch cases of 44mm and larger |
Q1: Does the 6497-1 have a hacking (stop-seconds) function?
A: No. The 6497-1 does not have a hacking mechanism, so the seconds hand continues to run even when the crown is pulled out .
Q2: How many turns of the crown are needed to fully wind a 6497-1?
A: From a complete stop, approximately 365-386 crown turns (about 55-60 complete rotations) are needed to fully wind the movement .
Q3: What are the hand hole sizes for the 6497-1?
A: Hour: 2.00 mm, Minute: 1.15 mm, Seconds (small): 0.28 mm .
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