Seiko Mod Basics
What's the difference between Seiko NH35 and NH34 movements? Complete comparison covering technical specs, GMT functionality, price differences, accuracy, power reserve, which movement suits your n...
Seiko NH70 Movement Guide: Skeleton Automatic Specs & Review
Posted by on November 27, 2025
Complete Seiko NH70/NH70A skeleton movement guide. Learn NH70 specifications, whether NH70 has date function, NH70 vs NH72 vs NH35 comparison, skeleton movement pros and cons, and whether NH70A de...
Is the Seiko 5 GMT a True GMT? Complete Technical Analysis
Posted by on November 25, 2025
This complete technical guide covers the critical difference between true GMT and caller GMT complications (which hour hand adjusts independently and why it matters)
Seiko 9SA5 Movement: Complete Grand Seiko Hi-Beat Caliber Guide
Posted by on November 25, 2025
This technical guide covers complete 9SA5 specifications, Dual Impulse Escapement operation (30% more efficient than Swiss lever), MEMS manufacturing precision, detailed comparison versus 9S85 pred...
Seiko 4R35 vs 4R36: Complete Movement Comparison Guide
Posted by on November 25, 2025
Complete Seiko 4R35 vs 4R36 comparison: Learn the key difference (date vs day/date), identical specs (21,600 bph, 41hr reserve, 23/24 jewels), shared features (hacking, hand-winding), which Seiko w...
Seiko 4R36 Movement: Complete Day-Date Automatic Guide
Posted by on November 25, 2025
Complete guide to Seiko's 4R36 day-date automatic movement. Learn how 4R36 differs from 4R35, technical specifications, day complication functionality, where it appears in Seiko collections, accura...
Seiko SKX007 Movement: Complete 7S26 Caliber Technical Guide
Posted by on November 25, 2025
The Seiko SKX007 houses the legendary Caliber 7S26-0020 automatic movement—a 21-jewel workhorse featuring 41-hour power reserve, 21,600 bph beat rate, and Seiko's Magic Lever bi-directional winding.
Seiko 4R35 Movement: Complete Automatic Movement Guide
Posted by on November 25, 2025
Discover the Seiko 4R35 automatic movement—Seiko's workhorse caliber powering Presage, Prospex, and 5 Sports collections. Complete guide covering specs, 4R35 vs NH35 differences, reliability, and b...
What is a Bruce Wayne Seiko? Complete GMT Mod Watch Guide
Posted by on November 25, 2025
Complete Bruce Wayne Seiko guide: Learn what this GMT mod is, why it's named after Batman's alter ego, key specs (NH34 movement, 40mm, black/grey bezel), vs Batman mod differences, pricing ($300-60...
Best Grand Seiko Watches: Top 8 Models to Buy in 2025
Posted by on November 25, 2025
Best Grand Seiko watches 2025: Top 8 models including Snowflake SBGA211 ($6,900 Spring Drive), White Birch SLGH005 (9SA5 hi-beat), GMT watches, pricing, specs, Spring Drive vs hi-beat comparison. C...
Top 10 Most Popular Seiko Watches for Every Budget in 2025
Posted by on November 25, 2025
Discover the most popular Seiko watches from $200 to $1000+. Complete guide to Seiko 5 Sports, Prospex dive watches, Presage dress models, and premium SKX mods for 2025.
Seiko SKX007 vs SKX009 vs SKX013: Complete Comparison Guide
Posted by on November 25, 2025
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 (...