Not the cheapest meter out there, but it's an *arm* meter, and it's still cheaper than the ones you could get elsewhere. Straightforward and easy to use.
Despite of what the product description says, it uses four AA batteries (as you can see in one of the pictures). Doesn't play very nice with rechargable batteries (declares them dead when they're far from it), I suppose the voltage difference between the non-rechargable and rechargable batteries is to blame. Has a DC adapter jack, but it doesn't say what should go into it (I'm guessing 6V, but it doesn't say which pole should be where).
Precision is good, all my repeat measurements were very close to each other. Accuracy seems fine, too, as the measurments were what I would've expected them to be, though I didn't have anything to compare it with. The pulse meter is also accurate.
Overall, except for the gripe about the batteries, I'm happy with it.
...with an equally impressive battery in it. I would even say it has greater capacity than the battery that originally came with my phone. If you need a replacement battery for any of the number of phones that use this type (and the list extends far beyond the models listed in the product description - I use it in an i5800 Galaxy 3/Apollo), this should be one of your first choices.
First, about the product. It's resonably well made. Nobody will ever mistake it for leather, but it isn't too plasticky, either. The back cover itself is molded, so it doesn't add much bulk or awkward edges to the phone, and is thus nice to hold. All the button and camera holes are in the right place, and don't get in the way. The screen cover clasp secures to the phone itself, so again there's no unnecessary thickness added. Overall, a nice case.
But. The SGS3 is a big phone, and there is no way around the fact that the screen cover of any vertical flip case will get in the way somehow when open, either by flapping around from the bottom, or adding an edge to the back when folded. Depending on your usage and personal preferences, this could be either totally unimportant, or a complete deal-breaker.
Pros: Has a nice weight, feels very solid. The touchscreen stylus part does its job flawlessly, and the ballpoint is a nice addition.
Cons: It's a bit short when the ballpoint tip is sheathed inside the stylus. There is no clip, or anything else to prevent it from rolling off when you put it down. The ballpoint part wobbles a bit when in the 'working' position.
The ballpoint takes the Lamy refills, but not the Parker ones (they're too thick), and a screwdriver is needed to remove it.
Pros: Does what it's supposed to flawlessly and costs very little. Cons: It's a bit short and feels somewhat flimsy (it's made of very thin metal). Also, this version (silver) is polished, so it will show fingerprints.
The material and the stitching look like they'll last forever (but it isn't leather, despite the description - it can't even pretend to be leather). The interior is soft, no danger of scratching there. For 3.5" screen phones (might even fit 3.7"). I'm using it for a Huawei U8650, which fits perfectly. Not much to say otherwise... Great value.
Like the previous reviewer said, it's the real deal, with all the performance you'd expect from one. If you're using a higher level DSLR, you'll want one of these, and it costs less here than in most other places.
While the claim of 30x magnification may be overinflated, it does provide more magnification than my 7x loupe (so let's call it 10x, perhaps?). It's solidly built, with a glass (not plastic) lens which doesn't show any distortions or defects. Fairly heavy. The two white LEDs give more than enough light. A battery compartment opening tool is included in the box.