This is a custom backing made for the Nintendo Fit Meter.
The backing replaces the stock one on the watch, using the same screw.
22mm Barton wristbands then turn this into a Nintendo smart watch.
The watch tells time, monitor steps, keep track of altitude, temperature, and estimates calories.
The watch also connects to the Wii U fit video game program where you can track your fitness.
You MUST have Wii U and Wii Fit game to program the watch.
It's available in a plethora of colours, choose from the right side.
The tracker was not designed to be attached to the wrist so there is a miscalculation of steps by approximately 20%.
As long as you consistently wear it on your wrist this should not be a problem as tracking is all relative.
If you'd like a pre-assembled watch, please purchase at this link.
To make your own, just order a backing through this page, and order the straps here.