Grand Seiko Evolution 9 Collection
Launched in 2020 alongside the 9SA5 caliber to introduce a refreshed ergonomics and case-finishing design language.
7 references
“Differs” marks a spec with different recorded values. — means not recorded.
| Spec | SLGB003 Spring Drive U.F.A. | SLGH005 White Birch | SLGA019 Lake Suwa (titanium) | SLGA021 Lake Suwa (steel) | SLGA015 Spring Drive 5 Days Diver | SLGB023 Ushio 300 diver | SLGC001 Tentagraph |
|---|---|---|---|---|---|---|---|
| Case size Differs | 37 mm | 40 mm | 40 mm | 40 mm | 43.8 mm | 40.8 mm | 43.2 mm |
| Lug to lug Differs | 44.3 mm | 47 mm | 47.9 mm | 47.9 mm | 51.5 mm | 48.5 mm | 51.5 mm |
| Thickness Differs | 11.4 mm | 11.7 mm | 11.8 mm | 11.8 mm | 13.8 mm | 12.9 mm | 15.3 mm |
| Lug width Differs | 20 mm | 22 mm | 22 mm | 22 mm | 23 mm | 21 mm | 23 mm |
| Case Differs | High-Intensity Titanium, round | Stainless Steel, round | High-Intensity Titanium, round | Stainless Steel, round | High-Intensity Titanium, round | High-Intensity Titanium, round | High-Intensity Titanium, round |
| Bezel Differs | titanium fixed | stainless_steel fixed | titanium fixed | stainless_steel fixed | ceramic rotating_unidirectional | titanium rotating_unidirectional | ceramic fixed |
| Crystal Differs | Box-shaped sapphire, anti-reflective coating | Box-shaped sapphire, anti-reflective coating | Dual-curved sapphire, anti-reflective inner coating | Dual-curved sapphire, anti-reflective inner coating | sapphire, anti-reflective inner coating | sapphire, anti-reflective inner coating | Box-shaped sapphire, anti-reflective inner coating |
| Water resistance Differs | 100 m | 100 m | 100 m | 100 m | 200 m | 300 m | 100 m |
| Caliber Differs | 9RB2 | 9SA5 | 9RA2 | 9RA2 | 9RA5 | 9RB1 | 9SC5 |
| Movement maker Differs | Seiko Epson | Seiko Watch Corporation (Shizukuishi Watch Studio) | Seiko Epson | Seiko Epson | Seiko Epson | Seiko Epson | Seiko Watch Corporation (Shizukuishi Watch Studio) |
| Movement type Differs | Spring Drive | Automatic | Spring Drive | Spring Drive | Spring Drive | Spring Drive | Automatic |
| Jewels Differs | 34 | Not recorded | Not recorded | Not recorded | Not recorded | 33 | 60 |
| Frequency | Not recorded | 36000 vph | Not recorded | Not recorded | Not recorded | Not recorded | 36000 vph |
| Power reserve Differs | 72 h | 80 h | 120 h | 120 h | 120 h | 72 h | 72 h |
| Complications Differs | power_reserve_indicator | Not recorded | power_reserve_indicator | power_reserve_indicator | power_reserve_indicator | power_reserve_indicator | chronograph |
| Dial Differs | Silvery-white, ice-forest linear pattern | Silvery-white, birch-forest texture | Blue, wave pattern inspired by Lake Suwa | Blue, textured pattern inspired by Lake Suwa | Deep black, Kuroshio Current-inspired texture | Blue gradient, Ushio (tide) pattern | Transparent blue, Mt. Iwate-inspired texture |
| Indices | Not recorded | applied faceted | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| Lume | Not recorded | Not recorded | Not recorded | Not recorded | Lumibrite | Lumibrite | Not recorded |
| Bracelet Differs | titanium bracelet, micro-adjustment folding clasp | stainless steel bracelet, folding clasp with push-button release | titanium bracelet, folding clasp with push-button release | stainless steel bracelet, folding clasp with push-button release | titanium bracelet, extension clasp with folding lock | titanium bracelet, locking extension clasp with micro-adjustment | titanium bracelet, folding clasp with push-button release |
| Produced Differs | 2021 | 2021 | 2022 | 2022 | 2023 | 2023 | 2023 |