Seiko 4R71 Movement Details
Seiko caliber 4R71 is an automatic (with hand winding) watch movement. Production started around 2018.
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| Sub-brands: | Premier |
| Power reserve: | 41 hours |
| Accuracy: | +45/-35 seconds/day |
| Day / date? | No |
| GMT / world time? | No |
| Chronograph? | No |
| Hacking? | Yes |
| Rate: | 21,600 bph |
| Number of jewels: | 24 |
| Lift angle: | 53º |
| Size / diameter: | 27.0mm |
| Height: | 5.32mm |
| Notes: | Designed for use in skeleton dial watches. Also sold as NH70. |
| PDF guides: | Technical guide : 4R71 |
| Related movements: | 4R38 4R72 |
Part Codes
| Stem code: | 351200 (tap 10) |
| Balance wheel code: | 310184 |
| Mainspring code: | 201083 |
| Screw codes: | 012100, 012168, 012354, 012919 (ratchet wheel screw) |