The card reader has worked well so far and I haven't had any problems with it (5 months later when I wrote this review). Its size is really good to take with you everywhere. It's a little over a quarter. However, if you're interested in carrying it on a keychain, the answer is no. No hole or key ring to attach it to your keychain. I didn't care as I was thinking of taking it apart to use in a project I wanted to do one day. So keep that in mind if you've been looking for some kind of keychain. The material this product is made of doesn't feel sloppy like other SD readers I've seen. As well as my previous comment on disassembly, I found this difficult as everything is really closed and just a one-piece plastic case. It's not in two parts that just slide out to open. Although I didn't expect that, it's a positive thing because it turned out to be a good product in the end. Tip. I should also mention that there is no cap on the top, which could be a downside. The SD card sits quite firmly in the slot, so it is unlikely that it will fall due to the missing cover. Still, it is important to be careful and keep an eye out when you're out and about anywhere and as the saying goes, 'better safe than sorry'.
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