Seiko 5 Sports "Bottle Cap" Automatic – SRPC63K1
The Seiko SRPC63K1 is a distinctive member of the Seiko 5 Sports family, affectionately nicknamed the "Bottle Cap" by the watch community due to its unique case shape that resembles a fluted bottle top. This model offers a bold, retro-modern look with a focus on durability and legibility.
Product Highlights:
Unique Case Design: Features a polished 45mm stainless steel case with a knurled bezel edge, giving it the signature "Bottle Cap" silhouette.
Stunning Sunray Blue Dial: The deep blue dial is accented by large, circular hour markers and bold hands, all treated with LumiBrite for exceptional low-light visibility.
Reliable Automatic Movement: Powered by the workhorse Seiko Caliber 4R36, which supports automatic winding, manual winding, and a hacking function for precise time setting.
Day-Date Display: A convenient window at the 3 o'clock position shows both the day and date in a high-contrast format.
Exhibition Caseback: The rear features a transparent window, allowing you to view the 24-jewel mechanical movement in operation.
Specifications:
Case Diameter: 45 mm
Case Thickness: 13 mm
Movement: Seiko 4R36 Automatic (approx. 41-hour power reserve)
Crystal: Hardlex Mineral Crystal
Water Resistance: 100 Meters (10 ATM) — suitable for swimming and snorkeling
Strap Material: Polished and brushed stainless steel link bracelet with a fold-over clasp.
Condition: Brand New with original tags, Seiko 5 Sports box, and international warranty card. Shipping: Fast and tracked shipping within Australia. Every watch is checked for bezel alignment and movement accuracy before dispatch.
Seller Note: The "Bottle Cap" is one of Seiko's most creative case designs. Despite its 45mm size, the lugless design makes it wear much smaller and more comfortably than you’d expect, even on average-sized wrists.

