A simple TPU Cross bracelet that prints quickly with minimal filament. 

After slicing, check to make sure that each of the ‘beads’ has a layer on the buildplate.
In some of my testing, not all of the beads were contacting the plate. Using orientation functions in the slicer typically fixes this. 

Sizing: 
The 210mm file should fit most wrists. There is a larger one if needed. 
If you need to shorten the bracelet, simply cut off the excess or use negative parts in the slicer.

The 230mm file is sized so that it should fit most printbeds, but may need to be diagonal. 

Fitting: The two end-most “beads” fit into the larger hemispheres at the top of the cross and should lightly snap into place. 

Print Settings: 
Filament: TPU. Unless you want it to be a stick instead of a bracelet.
First Layer: Many printers will likely need to slow down the first layer a lot. My P1S prints this easily on standard TPU settings. 
Infill: Really doesn't matter. It's going to mostly be walls nomatter what you do.
Walls: 2+