These electronic shelf labels are used and may have some slight burn-in (see picture for an example). The photos do not show the exact units you'll receive, but they are indicative of the overall condition.

Each unit is 2.7 x 1.3 x 0.5in.

They have a little shelf wear and dirt, not too bad but not pristine either.

A CR2450 battery is included; no guarantees about its charge level but it may be enough to get you started.

They communicate with a base station over a wireless radio of a type unknown to me, so I'm not able to test these units. I think they were used in the U.S. but am not certain. They are sold as-is with no returns. 

If you are either an experienced Digitaldata/Chroma installer or an adventurous DIY-er looking for an e-paper module with a built-in radio and microcontroller, this is the listing for you! Thanks!