Instruction: Output yes if the supporting document can answer the given question. Otherwise, output no.

Input:
Question: Does this monocular come with head gear of any kind or do i buy it separately?
Document: It's amazing the number of animals moving at night that you don't see. Everything works as stated and only wish I had purchased with the head mount. If you buy them together it's much cheaper.
I am spoiled by the Army Infantry but for the price, this is an Awesome unit. Clear, crisp, lightweight, well built and able to transform from head to weapon mount. This optic looks much better than Gen 1 and as good as some Gen 2 units. Do yourself a favor and buy this before the price goes up.Sgt. United States Army Infantry.
I used my buddies armasight spark core night vision monocular. I was absolutely amazed of how clear it was and how far I could see with it. the spark core itself does not weigh very much. it is very versatile you can wear it with a head mount, a helmet mount, or you can mount it on your rifle. It takes one CR 123 battery. It is compact and rugged with a ceramic tube instead of a glass tube which means the tube itself is even more durable.
* Manufactured in the USA by a well recognized and respected night vision company* Many accessories available (camera mounts, head/weapons/helmet mounts, adapters, and a 3x zoom lens!
Overall a very usable night vision device, the only &lt;$1000 unit I would buy.Pros:Usable night visionHigh resolution.
Should not be too noticeable beyond a few yards, however. * Unit can be damaged/degraded by the lens cap being removed in lighted conditions, even if not turned on. I'm pretty sure this is true of all night vision though. * If you buy this as a gift, you'll have to buy two... one to give away, and one to keep!Summary:The Spark is the most advanced Gen 1 available today, using a very new CORE technology.
Unwrapped today and so far so good. It turned on. Thats always good. I was hoping my existing J-Arm mount for my ANPVS would somehow fit onto it but it will not. I just ordered the adapter for another 100 bucks. I have not tried it outside yet, but in my totally dark basement it worked well. I decided to buy this because several reviews said it has no fishbowl image.Other fishbowl images must be really bad, because his model certainly has a fishbowl view.
It is a starlight monocular, which requires some form of ambient light. Very dim light should be enough. Gen 1 units amplify light by about 1000 times, Gen 2 by about 20,000 times, and Gen 3 between 30,000 to 50,000 times.
It is tough to get used to looking through a monocular. It also is not true 1x magnification, but that may be the nature of night vision. There is somewhat of a fisheye effect, but is to be expected. There is minimal amount of black spots. Using a separate infrared illuminator is necessary if you want to clearly discern objects past 5 meters.
You literally have to hold it up to your ear to hear it.The built-in IR LED seems strong enough to cast a wide beam, sufficient to light out to beyond 20 feet and probably further (though the unit claims it is only for use up to about 3 meters). The image itself is a fairly narrow field, and this is not a true 1:1 (1x magnification) monocular.
Answer: yes