I kept this unworn at home after purchasing it. I'll also include an extra strap as a bonus so you can see the see-through back. This is a collaboration item between the luxury watch brand Blancpain and Swatch. The material uses Swatch's advanced "Bioceramic," and the design replicates the diver's watch "Fifty Fathoms." Designed with the concept of the five oceans, it features maps of the five major oceans and sea slugs that inhabit them.