Seiko Selection SBTM323 Solar Radio-Controlled Watch Black Dial
Seiko Selection SBTM323 Solar Radio-Controlled Watch Black Dial
The Seiko Selection SBTM323 is a practical solar-powered quartz watch from Seiko’s S Series, equipped with the radio-controlled 7B72 caliber. It combines automatic time correction, a black dial, sapphire crystal, and a compact stainless steel case.
The 39.5 mm stainless steel case measures 9.5 mm thick and features a faceted, stepped-lug design. Its black dial uses applied indexes and LumiBrite on the hands and indexes, while the sapphire crystal includes Seiko’s Super-Clear Coating for improved legibility. The stainless steel bracelet is fitted with a one-push three-fold clasp.
The SBTM323 offers approximately nine months of power when fully charged and includes a full automatic calendar through December 31, 2099. It receives standard radio signals from Japan, China, the United States, Germany, and the United Kingdom, with 10-bar water resistance and JIS Class 1 magnetic resistance.
Key Features
Solar-powered radio-controlled quartz movement
Seiko caliber 7B72
Stainless steel 39.5 mm case
Black dial with LumiBrite hands and indexes
Sapphire crystal with Super-Clear Coating
Full automatic calendar through December 31, 2099
Approximately 9 months of power reserve when fully charged
10-bar water resistance
Specifications
Specification | Details |
Brand | Seiko |
Model / Reference | SBTM323 |
Collection / Series | Seiko Selection S Series |
Movement | 7B72 |
Caliber | 7B72 |
Movement Type | Solar-powered radio-controlled quartz |
Case Material | Stainless steel |
Case Diameter | 39.5 mm |
Case Thickness | 9.5 mm |
Lug Width | 20 mm |
Crystal | Sapphire crystal with Super-Clear Coating |
Dial Color | Black |
Dial Details | Applied indexes; LumiBrite on hands and indexes |
Bracelet / Strap | Stainless steel bracelet |
Clasp / Buckle | One-push three-fold clasp |
Water Resistance | 10 bar |
Functions | Radio time correction, full automatic calendar through December 31, 2099, time-zone adjustment, power-save function, automatic hand-position correction, overcharge prevention, quick-start function, reception-result display |
Power Reserve | Approximately 9 months when fully charged; approximately 2 years in power-save mode |
Other | JIS Class 1 magnetic resistance; radio reception from Japan, China, the United States, Germany, and the United Kingdom; weight 115 g |
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