SportRolex
GMT-Master II
★★★★★
40mm·Auto

Grand Seiko
Sport Watche2020| Reference | SBGE253 |
|---|---|
| Year | 2020 |
| Case Diameter | 40.5mm |
| Case Thickness | 14.7mm |
| Water Resistance | 200m |
| Movement | Spring Drive |
| Caliber | Cal. 9R66 |
| Power Reserve | 72h |
| Case Material | Stainless steel |
| Bezel | Ceramic |
| Crystal | Sapphire |
| Jewels | 30 |
| COSC | No |
The Grand Seiko Sport Spring Drive GMT is a sport watch from Grand Seiko, a top-tier Swiss watchmaker with deep horological credentials. The reference traces back to 2020. Case dimensions are 40.5mm × 14.7mm thick.
It runs on a spring drive movement with a 72-hour power reserve (caliber Cal. 9R66). The case is stainless steel, the bezel is ceramic, the crystal is sapphire. Water resistance is rated to 200m.
Sits in the mid-luxury tier ($5,000–$15,000) category. Compare it side-by-side with peer references using Patinax's comparison tool below.