[Coarse] Just starting out with astrophotography, this was perfect for my entry level telescope. I used it with a 900mm refractor with and without the kit lenses (20mm and 12.5mm) and it worked perfectly, I was able to focus easily and everything fit snugly in the 1.25" adapter. I tested it in the daytime with some barlows and it worked fine, but it does make it a lot harder to get a clean image as the camera's weight becomes a bigger issue. Getting this made me want to invest in better glass in general as it allows me to capture all the imperfections with the rest of my setup. Would recommend to anyone starting out with Astro-photography!

[12.5 x 11 x 3"] This microscope is built very solid, and is professional grade.

[12.5 x 11 x 3"] Surprising quality for the cost - obviously limited life with only a single battery, but still very useful. Nice options on white and red light options. Great for astrophotographers. Nice that you can point down beam. Comfortable and easy to adjust headband.

[Coarse] I am an engraver who has difficulty due to a neck injury using a microscope. These are not only a honest product but affordable alternative, giving me the flexibility that my microscope does not allow. This company's customer service is exceptional, initially when it arrived the light did not work. A quick phone call was greeted with a level of concern that impressed even myself (who had headed a CS dept. for 13 yrs). We discovered that it was the batteries that came with it that were faulty, they offered to replace them but I declined. Purchased new and it works FANTASTIC! Thank-you.

[10x] Free's up both of your hands to set up and work camera during night
Shoots

[1.6 lb] Really easy to put in your pocket and pop out when you want to take a gander at something at the 20x level! Only bummer is that this version doesn't come with a keychain attached, but it does come with a neato phone clip, it actually works pretty well though it does take some manual dexterity to take good picture. Took a picture of my couch cushion (see below)

[Battery] this little microscope surprised me. it has good resolution and is easy to use and very pocket friendly. i highly recommend it. whether you're a super serious scientist or a four year old it will open new worlds for less than twenty bucks. you can't go wrong!

[12.5 x 11 x 3"] Bought a Celestron first but could not get the software to work. Bought this after returning the Celestron. I bought this for my 11-year-old granddaughter. She is into biology, and I want to promote this. The scope works well and is easy to use. The only negative is the battery does not last long. Most of the time she uses it where an outlet is nearby. I put a few coins under it and found a misprint. I would recommend this for a child or adult.

[Coarse] These are excellent binoculars. I've used Steiner 7x50's before and the clarity is just as good, at a tiny fraction of the price. These are focus-free binocs for only $30 bucks. The only tiny nitpick are the lens caps - they come off too easily and I can see them getting lost. But I can MacGyver a solution - string them together using 200lb test fishing line with small holes thru the lenscaps and the fishing line strung thru the caps. Then all four lens caps will be strung together and easier to keep from losing them. Not a big deal. Buy these binocs; you're an idiot if you buy more expensive ones.

[Battery] I find the images to be very clear. It's exactly what I was looking for, something that is compact and light to carry along with great reach and delivering bright clear images. it's easy to use. Includes a protective carry case, cleaning cloth and cell phone adapter. I would buy this again.