Seiko Mod Guide

Complete comparison of the legendary Seiko SKX007 (black dial), SKX009 (Pepsi bezel), and SKX013 (38mm compact) dive watches. Learn key differences in size (42mm vs 38mm), bezel colors, lug width (22mm vs 20mm), current market prices ($300-600+), weight differences, hand designs, modding potential, and which discontinued SKX model suits your wrist size and style best. Includes detailed specs table, pricing analysis, and buying recommendations.

Complete guide to Grand Seiko's three movement technologies. Learn about 9S mechanical movements (Hi-Beat 36,000 vph), 9R Spring Drive hybrid calibers, 9F quartz accuracy, what makes Grand Seiko movements exceptional, and how they compare to Swiss alternatives.

Discover which Seiko movement delivers the best accuracy. Complete comparison of Seiko mechanical, Spring Drive, and quartz movements covering 9S85 Grand Seiko, 9F quartz, Spring Drive 9R, and how accuracy varies across Seiko's movement lineup.

Compare Seiko and Miyota automatic movements to find which suits your needs. Complete analysis covering NH35 vs 8215, accuracy, features, pricing, parts ecosystem, and which movement delivers better value for different use cases.

Discover the Seiko NH35A automatic movement—the modder's choice for custom watch builds. Complete guide covering specs, NH35A vs NH35 vs 4R35 differences, parts compatibility, reliability, and why NH35A dominates the watch modding world.

Discover the best Seiko 5 Sports watches for 2025, from SRPD dive models to dressy SRPE variants. Complete comparison of movements, water resistance, and premium SKX mod upgrades.

Learn everything about the Seiko NH70 movement: specifications, how it works, NH70 vs NH35 comparison, advantages, disadvantages, and which watches use it.