The Seiko SNKN01 is a mechanical automatic watch with movement-case reference 7S26-04B0. It houses the 7S26 caliber with 21 jewels, running at 21600 bph with an accuracy of +45/-35 seconds per day. It has a 41 hours power reserve, no hand-winding and no stop seconds hand function.
| Ref. | SNKN01 Depending on the region, bracelet model and other features you may find this watch reference written as SNKN01J, SNKN01J1, SNKN01J2, SNKN01K, SNKN01K1, SNKN01K2, SNKN01P, SNKN01P1, SNKN01P2, etc. |
| Case-movement ref. | 7S26-04B0 |
| Case-Dial code | 04B-11P |
| Caliber | 7S26 |
| Type | mechanical automatic |
| Jewels | 21 |
| Power reserve | 41 hours |
| Hand-winding | no |
| Stop seconds hand | no |
| Crystal | hardlex |
| Strap/Bracelet ref. | L0D1011J9 |