This is a coin cell holder for the common CR2032 type battery. The holder has a neat pop-in, pop-out feature that makes changing the battery easy.
These are very slim, extremely light weight batteries based on the new Polymer Lithium Ion chemistry.
Female Low profile socket strip - 5 per Strip, 0.100" (2.54mm) spacing
This 3-Panel Breadboard is a great prototyping tool that offers a large workspace.
Male Strip - 6 per Strip, gold flash surface on 0.1" spacing