Seiko 5 Sports SKX Series SBSA307 Automatic Men's Watch Yellow Dial
Seiko 5 Sports SKX Series SBSA307 Automatic Men's Watch Yellow Dial
The Seiko 5 Sports SBSA307 is a Japanese-market model from the SKX series, featuring a vivid yellow dial and the familiar SKX-inspired case design. It combines Seiko’s 4R36 automatic movement with a sporty black silicone strap and 10-bar water resistance.
The stainless-steel case measures 42.5 mm wide and 13.9 mm thick, with a curved Hardlex crystal and glossy Hardlex bezel display. The yellow dial includes applied indexes and LumiBrite on the hands and indexes, while the 4R36 movement provides automatic winding, manual winding, stop-seconds functionality, and a day-date calendar.
A see-through screw caseback reveals the mechanical movement. The watch weighs approximately 100 g and has a 22 mm lug width.
Key Features
Seiko 4R36 automatic mechanical movement
Manual winding and stop-seconds function
Yellow dial with applied indexes
LumiBrite on hands and indexes
Stainless-steel case with curved Hardlex crystal
Unidirectional rotating bezel with Hardlex bezel display
Black silicone strap
10-bar water resistance
Approximately 41-hour power reserve
Day and date display
Specifications
Specification | Details |
Brand | Seiko |
Model / Reference | SBSA307 |
Collection / Series | Seiko 5 Sports SKX series |
Movement | Seiko 4R36 |
Caliber | 4R36 |
Movement Type | Mechanical automatic with manual winding |
Case Material | Stainless steel |
Case Diameter | 42.5 mm |
Case Thickness | 13.9 mm |
Lug Width | 22 mm |
Crystal | Curved Hardlex |
Dial Color | Yellow |
Dial Details | Applied indexes with LumiBrite on hands and indexes |
Caseback | See-through screw caseback |
Bezel | Unidirectional rotating bezel with Hardlex bezel display |
Bracelet / Strap | Black silicone strap |
Water Resistance | 10 bar |
Functions | Hours, minutes, seconds, day and date display; stop-seconds function |
Power Reserve | Approximately 41 hours |
Other | Approximately 100 g; accuracy +45/−35 seconds per day; 24 jewels |
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