Seiko 6138 Movement Details
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| Sub-brands: | Speed Timer |
| Power reserve: | 45 hours |
| Day / date? | Day + date |
| GMT / world time? | No |
| Chronograph? | Yes |
| Hacking? | No |
| Rate: | 21,600 bph |
| Number of jewels: | 21 or 23 |
| Lift angle: | 54.5º |
| Size / diameter: | 27.0mm |
| Height: | 8mm |
| Development division: | Suwa (Nagano Prefecture, Japan) |
| Notes: | Based on cal. 6139 movement but with an added chronograph hand to measure elapsed hours. It has a column wheel and vertical clutch for more precise stopwatch measurement. |
| PDF guides: |
Technical guide
: 6138B
Technical guide : 6138A |
| Related movements: | 6139 |
Watches with this movement
- 6138-0010 “UFO / Yachtsman” · Find on eBay
- 6138-0020 “Tokai Zara” · Find on eBay
- 6138-0030 “Kakume” · Find on eBay
- 6138-0040 “Bullhead” · Find on eBay
- 6138-3000 “Jumbo”, 1977 · Find on eBay
- 6138-7000 “Slide-rule chronograph”, 1974 · Find on eBay
- 6138-8000 “Baby Panda” · Find on eBay
- 6138-8020 “Panda” · Find on eBay
Part Codes
| Stem code: | 354616 |
| Balance wheel code: | 310611 |
| Mainspring code: | 401616 |
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