Instruction: Analyze a question and its supporting document. Predicting answerability based on the information provided in the document. Output yes if the document contains relevant information to answer the question, otherwise output no.

Input:
Question: Does it have a zoom feature?
Document: ultrafire is small but gives a big blast of light an the power last a long time.UltraFire WF-502B CREE XM-L T6 LED Bulb 1000LM 5 Mode Flashlight Torch Tactical
it is definitely bright and seems to last a decent amount of time before needing to recharge. I think it is worth it.
if you're planning to purchase this because it says 1000 lumens, its a lot less bright than you're thinking. I have a 1000 lumen flashlight and it is much brighter than this.The first flashlight i received, i purchased used. It did not work at all. tried to contact the seller but received no help there since it was the only used and new flashlight they had. I decided to purchase another, it turned on and was much dimmer than i expected. it had a big white circle and then the reflector had a dimmer, more diffused halo around the bright circle.
already wrote a review for this item. I said it was a good flashlight, but the ad was wrong by saying that it could use aaa batteries and it didn't give me an adapter for them, so I had to order a set of rechargeable batteries, and pay another shipping charge.
[...] both of these lights were using brand new cells straight off the charger.
With a fully charged battery the light is super bright. Unfortunately, in 7 minutes time the light dims noticeably. So much so that I switch batteries. It's a great light for short duration's, it's super bright.
Whenever you buy UltraFire lights, you just need to be patient. I have purchased few more lights, and 1 out of 3 had issues within 1 week of light use. I returned it immediately, and I got the refund back in a week or so. Do not purchase any Made in China lights based on their advertised lumens. They are about 1/2-1/3 of their advertised brightness. Or Chinese lumens are different from Americans. Anyway, it is just luck of the draw. My other $15 UltraFire is just as bright as $60-$80 Olights, and totally happy with the purchase.
When i ordered it,it took a month and two weeks to come to my sky box in MiamiThen about another two weeks to get to Trinidad but that is not the problem.I was so anxious to get the product the time did not matter,the problem is whenI got it we needed to use it so what a good opportunity to test it out and in front allthe guys it worked for 1 min. then it over heated, it got extremely hot then stop workingHow embarrassing and now i am left with a Flashlight that dose not WORK and Don't know whatto do any suggestions ?Angry and Disappointed Customer
When I first opened the package the lens got loose. Then when I put in the batteries I had to shake the flashlight a couple of time to make the light come on. This product is really worth what I paid. Seems like this company uses all made in cheaply China products. I've learned my lesson.
We have bought about half a dozen of these and I will buy more as gifts. They are so bright, lightweight. Good for the bedside or the car.
Answer: no