Instruction: Given a question and the related document, and generate the answer to the question based on the information provided in the document.

Input:
Question: Does this only hold a single 35 mm negative shot or can you feed a strip through it?
Document: I was a bit dissapointed because I assumed that this was similar to my old Panavue slide viewer however this is not self lite. Actually it is just a magnifier designed to hold a 35 mm slide. It will do the job I guess and the good news is there is no bulb to burn out and no batteries to replace --so it's cost effective. I will need some time to work with it to really see it's usefullness. Delivery was almost immediate and came with a coupon for services from the company.
This is a nice low cost viewer. Gets the job done. You have to hold it up to a light to see the slide.
One review described it as coming from a cracker jack box, You have to hold a flash light up to see anytiing
Serves the purpose inexpensively, and needs no batteries or electricity! Hold it toward the sunlight or a lamp, and view slides perfectly!
I got this to use when I want a quick look in more detail at slides when I am sorting them for scanning. No batteries required is a big plus. Just hold it up to a light source and it works well.
You need a fairly bright light source to get best clarity. Simple device. Put in the slide hold up to the light and there is your picture. This is good for sorting all those slides and deciding if the blurry ones are really worth keeping
Cheap piece of plastic;  does not allow enough light through its lens, even if you hold it up to a window or other light source. Definitely not worth even half the price. Sorry I ever purchased this item. This, in my opinion is a piece of inferior merchandise.
This slide viewer, as noted in other reviews, does not have its own light source, so you'll have to hold it up to light, and it doesn't have large magnification, BUT FOR THE MONEY and THE CONVENIENT SMALL SIZE (easy to handle & store, easy to take to Mom's house to make an initial sorting through a huge box of old family slides), it gave me exactly what I needed: a quick peek at a thousand or so old family slides.
Useless & way overpriced. You must put one slide in, hold it to a light source, then squint with one eye in the viewfinder to see. Remove slide and repeat process indefinitely. Not worth more than $2.50 at the most - generously speaking. I will need to spend more to get something I can use. By the way, the name is Panaview 3, but you can only view one slide at a time. Yes, you need good eyesight.
tiny piece of plastic garbage .. but it will work for what I needed it for ... should hav found one that could load multiple slides at once
Answer: This simple gadget is not designed for negative strips but for one-at-a-time slide viewing.  There is little magnification and no light provided.  It is not much better than holding a bare slide up to a bright light.