Seiko GMT Batman Mod
What Should You Pay?
Estimated fair market values. Actual prices vary by condition, completeness, and seller.
This is a custom-built Seiko Mod watch with a GMT function, commonly referred to as the 'Batman' due to its black and blue ceramic bezel. It features a Seiko NH34 automatic movement, a sapphire crystal, and often includes an exhibition case back.
Specifications
Movement
More from 5 Sports
View all 5 Sports references →
Related Guides & Articles
The best watches you can buy under $1,000 in 2026 — pre-owned and new picks from Seiko, Hamilton, Orient, Tissot, and G-Shock with current prices.
Current secondhand Seiko prices — from the Seiko 5 to Presage and Prospex. See pre-owned median prices, ranges, and the best Seiko watches to buy used.
Learn how to compare pre-owned watch prices across marketplaces — understand market value, spot overpriced listings, and find the best deal on the watch you want.
The best deals on pre-owned watches this month — undervalued models from Rolex, Omega, Tudor, Seiko, and more, with current market prices and why they're worth buying.