Casio G Shock model 3420 - Jewelry & Accessories - Malden, Massachusetts | Facebook Marketplace | Facebook
![Casio 3420 Module test screeen, set-up tutorial & function demonstration | Big Case GD-X6900 watch - YouTube Casio 3420 Module test screeen, set-up tutorial & function demonstration | Big Case GD-X6900 watch - YouTube](https://i.ytimg.com/vi/O9AVRgMZSqU/maxresdefault.jpg)
Casio 3420 Module test screeen, set-up tutorial & function demonstration | Big Case GD-X6900 watch - YouTube
![Casio 3420 Module test screeen, set-up tutorial & function demonstration | Big Case GD-X6900 watch - YouTube Casio 3420 Module test screeen, set-up tutorial & function demonstration | Big Case GD-X6900 watch - YouTube](https://i.ytimg.com/vi/H5_7sR5_t2o/hq720.jpg?sqp=-oaymwEhCK4FEIIDSFryq4qpAxMIARUAAAAAGAElAADIQj0AgKJD&rs=AOn4CLBeO0OgB0gfBMDQB-x6u29pKuZ5Bw)
Casio 3420 Module test screeen, set-up tutorial & function demonstration | Big Case GD-X6900 watch - YouTube
![Casio 3420 Module test screeen, set-up tutorial & function demonstration | Big Case GD-X6900 watch - YouTube Casio 3420 Module test screeen, set-up tutorial & function demonstration | Big Case GD-X6900 watch - YouTube](https://i.ytimg.com/vi/VxGjpaFVIGs/hq720.jpg?sqp=-oaymwEhCK4FEIIDSFryq4qpAxMIARUAAAAAGAElAADIQj0AgKJD&rs=AOn4CLCZ-O1rYKRH9_M-X1Y6NCCaGRmt3Q)