The Seiko SNKH99 is a mechanical automatic watch with movement-case reference 7S26-03L0. 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. | SNKH99 Depending on the region, bracelet model and other features you may find this watch reference written as SNKH99J, SNKH99J1, SNKH99J2, SNKH99K, SNKH99K1, SNKH99K2, SNKH99P, SNKH99P1, SNKH99P2, etc. |
| Case-movement ref. | 7S26-03L0 |
| Case-Dial code | 03L-10L |
| Caliber | 7S26 |
| Type | mechanical automatic |
| Jewels | 21 |
| Power reserve | 41 hours |
| Hand-winding | no |
| Stop seconds hand | no |
| Crystal | hardlex |
| Strap/Bracelet ref. | 301F1JM |