Ordered the 5610-1 with the older 3159 module, received the 5610U-1CF with the newer 3495 module. I'm not complaining, and I only paid $90 👍 : r/gshock
G-SHOCK - CASIO G-SHOCK ソーラー電波時計 3159-JAの通販 by Bogen's shop|ジーショックならラクマ
G-SHOCK 3159 JA 電波ソーラー - 腕時計(デジタル)
G-Shock Module 3159 Watch Movement | Caliber Corner