SD Auto Chronograph GMT, Hi-Beat Auto & Date, SD Manual No-Date
![SD Auto Chronograph GMT, Hi-Beat Auto & Date, SD Manual No-Date](https://watchprofessoracademy.com/wp-content/uploads/2023/06/1B96C959-BC83-48B9-86C5-5FEE1A1917F8.jpg)
What do the suffixes “C”, “H”, and “Y” in the models SBG[•] tell you about the type of GS movements being used?
The suffixes “A” to “Z” are given for different GS watch functions in a timepiece. The “B” in SBG[•] indicates the previous generation of SDs and HBs. The “L” in SLG[•] indicates that these are watches with the new 9RAx, 9SAx or 9STx next generation movements released after 2020.