Screaming Sister - Signet Ring - US 9 - 19mm inside diameter
You are not sure about your size or the design on your finger? Just order the cheap plastic version for testing. Other sizes or materials on request - I will resize and upload another Ringsize from where you could order. If you got any questions or adding wishes to the ring - just press "Contact Designer" on top or mail to email@example.com and tell me your desire.
Please notice - the speaker don't move like shown in the Video. ;-)
Shapeways Material Portfolio
If you don´t know your ringsize in mm this links may help you: