We just got our latest shipment (June 2018) in of these neat little magnifiers, after having been out of stock for a few weeks. This latest version requires a different set of batteries than before, now the magnifier uses CR 1220 batteries (2 of them). These batteries are easily found on amazon/ebay, and cost about $0.50 each (if you buy 5 or more of them). Please find our manual (here on our site) to see the diagram of how to place the batteries- it is very easy to do, but be sure to alternate the batteries or else the light won't work!