Wow. That’s cheap. The description doesn’t give any specs on read time or what specific size battery it uses. You should post back when you get yours and share those details.
I have one that looks exactly the same. Wasn’t that cheap, but didn’t ship from China, I assume someone in the US bought a bunch and is reselling them. Yeah, they’re cheap…on the wallet and quality. Save your money for a nicer one.
Price is up on both those links, here’s another seller with the same item for $2.85 and free delivery (at least as of now):http://www.ebay.com/itm/251168853097?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649
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