B-640 - module 3294 tutorial on how to setup and use all the functions - YouTube
Casio B640WC User Manual / Module 3294
Amazon.com: Casio Smart Watch. B640WB-1AEF, Black/Grey, 38.9 x 35.0 x 9.4 mm, Bracelet : Casio: Clothing, Shoes & Jewelry
CASIO Watch QW-3294 User Guide
Amazon.com: Casio Smart Watch. B640WB-1AEF, Black/Grey, 38.9 x 35.0 x 9.4 mm, Bracelet : Casio: Clothing, Shoes & Jewelry
Relógio G-Shock Casio Feminino Preto - Produto Original | DR Originals
TimeBox Original Watches PH - ☝️This is 1000% ORIGINAL LEGIT CASIO with particular Unit Model Number in Watch Tag 3294. This number should match with the Module number in the Manual too