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
Casio G-Shock 3159 Gw-M5610Bc used Free Shipping From Japan | eBay
Casio G-Shock GW-5000-1JF Wrist Watch for Men 3159 JA Japan Vintage | eBay
Set Of Gw-5000 Gw-M5610 3159 Composite Band | eBay
Casio G-Shock 3159 Gw-M5610Bc used Free Shipping From Japan | eBay
G-Shock GW-M5610 / 3159 / Immortal Classics with Solar Power & Radio Accuracy