Unitas 490
Mechanical
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Notes
open face calibre
varying bridge shapes
attention: left handed ratchet-wheel screw
likely exclusively for Rotary, because else nowhere listed
Dimensions
| Width | 39.05 lignes (88.09 mm) |
|---|---|
| Height | 4.2 mm |
| Stem height | 1 mm |
| Hands (H × M × S) | 2 × 1.15 × 0.27 mm |
Technical data
| Beat rate | 18,000 vph (2.5 Hz) |
|---|---|
| Lift angle | — |
| Power reserve | 40 h |
| Jewels | — |
| Shock protection | — |
| Mobile stud carrier | No |
Complications
| Self winding | No |
|---|---|
| Date | No |
| Day | No |
| Hacking | No |
| Chronograph | No |
Mainspring
| GR code | GR3405 |
|---|---|
| Height | 1.3 mm |
| Thickness | 0.18 mm |
| Length | 420 mm |
| Barrel diameter | 14 mm |
Overview
| Type | Mechanical |
|---|---|
| Manufacturer | Unitas |
| Year | — |
| Family | — |
| Clone of | — |
Related calibers
- Unitas 501
- Unitas 499
- Unitas 226
- Unitas 283
- Unitas 285
- Unitas 286
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- Unitas 299
- Unitas 303
- Unitas 307
- Unitas 309
- Unitas 331
- Unitas 333
- Unitas 327
- Unitas 329
- Unitas 339
- Unitas 337
- Unitas 335
- Unitas 341
- Unitas 343
- Unitas 345
- Unitas 348
- Unitas 349
- Unitas 351
- Unitas 353
- Unitas 355
- Unitas 498
- Unitas 497
- Unitas 493
Documents
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Updated 7 days ago · 0 revisions