Casio Edifice WR100M Watch ⌚ Model EFV-C100D-2AV in Blue 💙 Dial & Silver Chain - YouTube
Edifice EFR-539 User Manual / Casio Module 5345
Casio Edifice 120D. I enjoy it's blend of tech and sophistication, but the negative display is almost unreadable in low light situations; so good luck telling time if your hands are full