About this 3D model

This is a replacement for the glass back in the moto 360 first generation. The print has a space to accomodate a 33mm diameter x 0.5mm thickness glass. This glass you can easily buy as Galaxy Gear S3 Glass tempered Screen Protector. The rest is just glue the glass to the 3d print, i used b7000 glue, and then the part to the watch. With the part the watch charge and measure HR fine.