![Just bought my first g-shock (GM-2100MF). Love the way it looks but concerned it's a fake. The internal module number (during testing mode) shows up as 5590 instead of 5611. Anybody else Just bought my first g-shock (GM-2100MF). Love the way it looks but concerned it's a fake. The internal module number (during testing mode) shows up as 5590 instead of 5611. Anybody else](https://i.redd.it/just-bought-my-first-g-shock-gm-2100mf-love-the-way-it-v0-dhkrcml6nbm91.jpg?width=3024&format=pjpg&auto=webp&s=c5ecf3ce91b7aaf22ac5a34c4a155bf2987201ab)
Just bought my first g-shock (GM-2100MF). Love the way it looks but concerned it's a fake. The internal module number (during testing mode) shows up as 5590 instead of 5611. Anybody else
![GA-2000 G-SHOCK 5590 Set Time, Date, Home City,12/24H , Key operation tone, DST, Light duration Demo - YouTube GA-2000 G-SHOCK 5590 Set Time, Date, Home City,12/24H , Key operation tone, DST, Light duration Demo - YouTube](https://i.ytimg.com/vi/q8mGCtWQKPw/mqdefault.jpg)
GA-2000 G-SHOCK 5590 Set Time, Date, Home City,12/24H , Key operation tone, DST, Light duration Demo - YouTube
Manual For Casio G-Shock GA-2000E-4DR Analog-Digital With Carbon Core Guard - Module 5590 | PDF | Timer | Daylight Saving Time
![GA-2000 Carbon Core Guard G-Shock tutorial - how to setup & use ALL the functions on the 5590 module - YouTube GA-2000 Carbon Core Guard G-Shock tutorial - how to setup & use ALL the functions on the 5590 module - YouTube](https://i.ytimg.com/vi/VWOJPg4uxzU/maxresdefault.jpg)