This part slips in the clip of an IPod Nano (TM) to allow you to use it like a Watch. You need a watch band - I found mine listed under Divers Velcro (TM) watch band. They can go for like $6. This is a design I came up with in a short period of time. The day it was released I bought one and made this. It was the first "Thing" I designed for my MakerBot. I wear mine all the time, it has a few draw backs the largest is the dock connector is exposed when washing your hands. I take no responsibility if you wash your Nano and it stops working. To get the Watch Face you can set it to Black on White or White on Black in the General Settings under Date & Time - set Time On Wake to - ON. Then choose the color scheme under Clock Face.