{"product_id":"seiko-prospex-srpg18k1-land-tortoise-mens-watch","title":"Seiko Prospex SRPG18K1 Land Tortoise Men's Watch","description":"\u003cp\u003eThe Seiko SRPG18 (also referenced as SRPG18K1 \/ SBDY099) is a distinguished, high-performance Japanese automatic mechanical sports timepiece from Seiko’s celebrated Prospex Land Collection. Celebrated worldwide among horology enthusiasts, sports watch collectors, and overland adventurers by its iconic series nicknames—the \"Land Tortoise\", \"Tortoise\", \"Field Tortoise\", or \"Compass Turtle\"—this 42.4mm watch channels the legendary tool-watch DNA and ergonomic cushion-case silhouette of Seiko’s historic diver lineage into an expedition-ready terrestrial explorer. It pairs a warm rose gold-tone plated stainless steel case with an earthy matte brown dial, bold LumiBrite geometric hour indices, gold-tone faceted pencil and arrow hands, a discreet date calendar window at 4:30, an in-house Japanese automatic mechanical movement, a premium scratch-resistant sapphire crystal, a certified 200-meter water resistance rating, and a supple brown calfskin leather strap. Perfectly tailored for gentlemen seeking authentic mechanical reliability, outdoor navigation functionality, and refined vintage luxury aesthetics, it transitions effortlessly from rugged wilderness trails to refined evening occasions. The defining visual highlight of this SRPG18 reference is its warm, organic earthy brown dial face framed by the luxurious luster of its rose gold-tone case finish. Surrounding the dial is a bidirectional rotating navigational compass bezel with a dark brown aluminum insert and rose gold-tone cardinal orientation markers (N, S, E, W), allowing explorers to establish bearings using the sun and the hour hand. The dial architecture features applied circular, rectangular, and triangular indices generously filled with Seiko’s proprietary high-potency LumiBrite compound, ensuring immediate, long-lasting readability in low-light wilderness conditions and total darkness. A date calendar window sits tucked unobtrusively between the 4 and 5 o'clock positions, preserving full symmetry and complete luminescent hour markers. The harmonic interplay between the rich brown dial, luminous indices, brushed cushion contours, polished rose gold-tone bevels, and vintage-stitched leather strap delivers a sophisticated, rugged, and distinguished presence on the wrist. Beneath its refined exterior, the watch is powered by Seiko’s proven in-house Caliber 4R35 automatic mechanical movement. Built with advanced self-winding mechanical architecture, the movement is equipped with manual hand-winding capability and second-hand hacking (stop-seconds) functionality for down-to-the-second time synchronization. Operating at 21,600 vibrations per hour (3 Hz) across 23 jewels, this mechanical engine coordinates central three-hand timekeeping alongside an integrated quickset date complication at 4:30, delivering a dependable 41-hour power reserve generated entirely by the natural motion of the wearer’s wrist or manual crown winding. The case is engineered with Seiko’s celebrated \"Tortoise\" cushion-style architecture, measuring 42.4mm in diameter with a remarkably slim profile thickness of 11.7mm, an ergonomic lug-to-lug distance of 45.2mm, and a 20mm lug width, providing a flush, balanced, and exceptionally comfortable fit on the wrist. Dial protection is provided by an ultra-durable, scratch-resistant sapphire crystal. The solid stainless steel case incorporates Seiko's signature offset screw-down crown positioned at 4 o'clock with integrated case guards, preventing crown bite into the wrist during active movement and securing the case against moisture intrusion. On the reverse, a solid screw-down case back is engraved with official Ground-to-Air Emergency Signal distress codes, serving as a practical reference guide for remote expeditions. Built for serious terrestrial and aquatic utility, the watch achieves a certified 200-meter (20 bar \/ 20 ATM \/ 660 ft) water resistance rating suitable for swimming, snorkeling, and high-impact watersports. The timepiece comes completed on a supple genuine brown calfskin leather strap with reinforced tonal stitching, secured by a matching rose gold-tone stainless steel pin buckle.\u003c\/p\u003e","brand":"MonaWatch","offers":[{"title":"Default Title","offer_id":54040949784890,"sku":"SRPG18K1","price":1530.0,"currency_code":"AED","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0920\/5858\/3354\/files\/NewProject_3d342eaf-1750-4286-90e3-e959d79f8a59.webp?v=1789094589","url":"https:\/\/www.monawatch.com\/products\/seiko-prospex-srpg18k1-land-tortoise-mens-watch","provider":"MonaWatch","version":"1.0","type":"link"}