BOOMIBOO10X42 Monoculars for Adults High Powered, FMC Multi-Layer Coated Lenses & BAK4 Prism with Smartphone Holder & Tripod, Compact Telescope for Camping Hiking Bird Watching

I have a very expensive Monocular that is great for very long distance navigation, sighting etc but the field of view is very small at 12x50 that for general scenery and navigation on protected waters, viewing scenery etc, I ordered the Boomiboo Monocular (I guess they call it a telescope, fair enough) at 10x42 and it's much better for seeing a larger field of view. A quick guess is at 100 yards the 10x50 gives you a 25 foot circle of view, these 10x42 give you more like a 50 foot circle which means it's easier to use surrounding scenery or objects to find your target. This Monocular at 10X42 is the standard for outdoor Binoculars in general, my 10x50 is a more specialized tool and really needs to be mounted on a tripod. I will be keeping these in my Harley for scene checking and on the boat for navigation. I will save the 12x50 for mounting to the phone during more controlled situations for photography, recording, on the big tripod. If you are looking for optics for outdoors and if you are still confused about the numbers. Most folks will be best off with a 10x40 or 10x42 once they are looking out past the close up bird watching range. Opera glasses or kids binoculars for bug hunting and bird watching might be more like 8x25 just to give a comparison.That being said, I am pretty impressed with the lenses and build of these and they are almost identical to the expensive pair except they are a little lighter material, not as much drop protection, and tripod and mounts are all plastic where with the more expensive model they are metal reinforced. All in all, this is a good "Telescope" for outdoor sports, scenery, navigation, tracking and hunting, rescue, etc. At less than 20 dollars you absolutely can't go wrong.I say this is a more than good deal for the money. My other pair cost me three times as much and I can't see any difference in the lenses or the technology. Was going to go four stars because one of the tabs is glued on crooked and I am going to have to fill it in to make it waterproof, but five stars because I think this tool will hold up fine and do everything I need it to do. Recommend for folks who enjoy the outdoors.

Shallow DoF makes focus fiddly. Quite a bit of fisheye distortion depending on how close/far your eye is to the lens eyepiece. Nice size, armoured body. Lens caps. Phone holder & tripod are mostly useless

For the $19 it's is a good Monocular. Easy to use and focus in on when looking into the lens. I do a lot of hiking and bird watching and it was good up to a point. The distant view was not far enough many time for my use.I found the tripod and cell phone unusable. The legs on the tripod were wonky, and would collapses easily. I did manage to get a picture taken. It's a circle picture. (iphone 15)The storage bag came with the belt hook sewing unraveling. Also, comes with a short strap that you can place around your wrist. Would be nice if it was longer, and I could have it around my neck ready to use and carry easily. It does have a bit of weight to it, so hike for a bit would make it a bit tiring on the neck.Picture of me with the yellow eye patch that came with it. Nice thought but really not worth keeping track of.The only instruction that came with set, 1/3 sheet of paper. I had to go to the product page on Amazon to figure out the tripod connection and phone set up.Like I said a goof Monocular for the price, or for backyard watching the bird feeders but for field work I'm just not feeling it

Love this little extra. It beats having a full binocular set in your bag. The focusing and zoom feature is a bit clumsy, but I think it is more user error than product.The Monocular fits perfectly into your pack and does not take up a bunch of space. The added storage bag is a bit small if you wanted to include the phone tripod and attachment. However, if you want to use this as a spotter it can be hung around your neck (does not come with Monocular) or just pull from your pack.Seems to be VERY durable built well to ensure the out doors. The added caps will protect the eye piece and lens from any outside abrasion.

The most redeeming feature of this scope is that for the price, the optics are very good. This is a fine pocket scope or something to keep in the car to spot birds/animals/signs/etc near the road. Obviously you're not going to be identifying grizzlies by their ear tags on a mountainside a mile and a half away.However, it's clear that the overall build quality is very bargain-basement. The fitment of the rubber housing is off a bit here and there, the phone adapter is tricky (put it on your phone first and get your phone's lens centered, then gently slide it on the monocular and pray you didn't wiggle anything too much), and the little included tripod is absolute garbage -- the balljoint won't tighten in place and the legs just constantly wiggle and it stands off-balance anyway. They should save themselves 85 cents and just not include it in the next version. You should just spend $10-$20 and get a decent mini-tripod if you need that.I'm going to leave this in the glove box, though, because it does accomplish the core task of being a little quick-spotter. But I'll leave the accessories at home (or in the trash).