Movement Specifications
| Specification | Value |
|---|---|
| Size (<ligne>) | 8 3/4" |
| Height (<mm>) | 5.23 |
| Accuracy (<per Day>) | -20 ~ +40 sec |
| Posture Difference | (under) 50 sec |
| Running Time | (approximately) 40 hours |
| Vibration Frequency (<per Hour>) | (vibration) 28800 |
| Jewels | 21 pcs |
| Lift Angle | 50 degree |
| Original Package | 300 pcs |
Clearance Requirements
Clearance changes subject to the glass, case structure, and the length of the hand.
| Component | Minimum Clearance |
|---|---|
| Hand | 0.40mm min. |
| Movement | 0.35 ~ 0.45mm |
A visual representation of a watch case cross-section showing the minimum clearance required between the hand and the movement.
Option Parts and Components
Option Parts:
- Casing clamps (082-070)
- Screws (923-140)
Included Components:
| Part Name | Part Number |
|---|---|
| Attached Stem | 065-117 |
| Screw for dial fix | 928-150 |
| Dial Washer | 078-040 |
| Hour Wheel | 075-378 |
Diameter: Φ19.80
Gilt Version Available
A small illustration of the 6T28 watch face is also depicted.
Time Measurement & Winding Information (Mechanical)
Accuracy
Measure accuracy within a lapse of 10~60 minutes from full winding with posture 1.
Posture Difference
Measure accuracy in the following postures:
- Dial side up
- 6 o'clock side up
- 9 o'clock side up
- 3 o'clock side up
Four distinct diagrams illustrate different orientations for measuring accuracy: 1. Dial side up. 2. 6 o'clock side up. 3. 9 o'clock side up. 4. 3 o'clock side up.
To Make Full-Winded
| Movement Series | Action |
|---|---|
| 90 / 91 | Turn the crown 40 times |
| 82 / 8N | Turn the crown 40 times |
| 6T | Turn the crown 20 times |
Winding Direction
Two circular diagrams show the direction of crown rotation for winding. One for '90/91/6T' series indicates clockwise winding. The other for '82/8N' series also indicates clockwise winding.
The text "Setting the Time" is also present, indicating a function of the movement.
