Seiko 5 Sports SRPK18 U.S. Special Creation Gold-Tone Automatic Watch. Precision-engineered in Japan, built to outlast trends — the Seiko SRPK18 is a serious tool. From the 5 Sports collection, the SRPK18 measures 42.5mm — carrying confident wrist presence without going overboard. At 170g, this watch has serious presence — you'll know it's there.. 100m (10 ATM) water resistance means this can handle the pool, the beach, and everything in between. Anchored by a stainless steel bracelet and tri-fold push-button release clasp with secure lock — solid, secure, built for everyday use. Multi-function sub-dials display day, date, and more — useful information at a glance. Luminous hands and markers ensure readability after dark — no reaching for your phone. The 4R36 automatic movement runs on wrist motion alone — no batteries needed, ever. The gold tone adds a warm, luxurious accent that catches light beautifully.. Specifications. Barcode / EAN. 0790313734913. Bezel. Gold-tone uni-directional rotating bezel with 60-minute scale. Brand. Seiko. Calibre. 4R36. Case Colour. Gold. Case Diameter. 42.5mm. Case Material. Stainless Steel (Gold Finish). Case Shape. Round. Case Thickness. 13.4mm. Clasp. Tri-fold push-button release clasp with secure lock. Collection. 5 Sports. Crystal. Hardlex. Dial Colour. Black. Functions. Hours, Minutes, Seconds, Day, Date, Stop seconds function (hacking). Gender. Men's. Lug Width. 22mm. Luminous. Lumibrite on hands and markers. Model. SRPK18. Movement. Automatic. Strap Colour. Gold. Strap Material. Stainless Steel. Water Resistance. 100m (10 ATM). Weight. 170g