Red Numbers F-91 - Modified Casio Watch

🇺🇸No extra surprises at checkout🇺🇸 – U.S. buyers usually pay no or very low import fees.
Most of our U.S. customers report receiving their watch without any additional charges since the new tariff policy in 2025.
Feel free to reach out to us for any questions :)

We buy only original Casio watches and modify them in-house in Croatia to our customers’ needs and wishes :D

EON “Red Numbers” F-91 Mod – F-91W Custom Casio Mod – White Modified Digital Watch with Red Polarized Display – Retro Minimalist Gift Digital Watch

The Red Numbers Mod is a minimalist twist with a bold visual edge.

By replacing the default polarizer with a positive red filter, this mod displays bright red digits against a clean white backdrop — resulting in a design that feels both vintage and futuristic at once. It’s a subtle yet striking change that transforms the everyday digital watch into something unique.

Simple, sharp, and great for daily wear.

🔧 What’s Modified:
Red polarized screen for red digit display
Clean internal rebuild
Fully tested by hand in our workshop

⚙️ Original Specs (Retained):
Stopwatch
Alarm
LED backlight
Approx. 10-year battery life
Water resistance: 30m
Case size: 38.2 × 35.2 × 8.5 mm

Custom Casio Royale AE-1200 Red Weighted Metal - Modified Watch- Red Display, Black Metal Strap and Oil Fill - Digital Casio Vintage