Seiko Lassale
cal. 9442
Factory Spec. 20 SPY
Thermocompensated: Dual Oscillator (32 kHz + 40 kHz)
User Adjustable: Yes
Some details for this watch are missing because it has not yet undergone comprehensive testing.
| Parent Company | Seiko Holdings Corporation |
| Brand | Seiko |
| Model Series | Twin Quartz |
| Model Name | Lassale |
| Model Number | unknown |
| Case Number | 5019 |
| Serial Number | 120409 |
| Approx. Date of Manufacture | February 1981 |
| Calibre (mvt maker) | 9442 |
| Calibre (brand) | 9442 |
| Factory SPY | 20 |
| TC Appproach | Count adjustment & twin quartz |
| Frequency (XO 1) | 32 kHz |
| Frequency (XO 2) | 40 kHz |
| Rate Adjustment | User |
| Major Inhibition Period | unknown |
| Minor Inhibition Period | unknown |
| Power | Disposable cell |
| Cell Number | SR927SW |
| Case Back | Press (no tool needed for closing) |
| Water Resistance | unknown |
| Features | 3-hand, no numeral dial |
| Date (not perpetual) | |
| Timing Results | Basic data & Further details |
| Images | Photos - Large File Sizes! |
| Documents | Parts list |
| Technical guide |