Instruction: Generate an answer to the question by utilizing the information contained in the document.

Input:
Question: What is the warranty on this product?
Document: When it works it works good, but mine just quit on me. Based on my research, it happens quite often. Do yourself a favor, buy an American product with a warranty and save yourself the trouble that I am dealing with.
Yes i know its not a canon or a nikon product but,it is amazing the recycle time is fast.The yn-568 has the exact body of the sb 900 and canon flashes.
I already have a YN560 (earlier version) and I am satisfy with it. As a  photographer for a church, I need one with faster cycling & more powerful. YN-568EX works wonderful and in par with the high end Canon product. Why pay more?
I like the Yongnuo YN568EX because I was looking for something beside the 500.00 to 700.00 or more list price, than the big price brand name. While the price was great, by manual operation, I-ttl, an wireless capability that was the icing on the cake. Its what I was looking for without the high price. I would recommend this to anyone that is looking for a good reliable and cost effective product.
you press the shutter the flush flushes 3 times and only than the camera takes the picture.i use D90 camera . I ended up returning it.
very good!!! !
stronger than a 910 doesn't over heat like a 900 and can shoot 12 pictures continues fire in TTl and the buffer locked up before the flash ran out of power.D7000 200 iso
some how a piece of the battery cover broke  where it doesn't close properly. I send an email to the manufacture but got no response, so now i have a flash that doesn't work.
just used for a two day wedding as my main on camera flash and it worked very well. I will say it seemed to drain the batteries quicker than a nikon speedlight. But as long as I made sure the batteries stayed fresh it worked very well.
great flash for the money, nice and solid feel, secures well to hot shoe, comunicates well with my  Canon T4i
Answer: My flash was broken a couple of months after the buying, the seller doesnt take responsability, he send me with Yongnuo. they told me that I had to send the flash to China to reclaim warranty, and I had to pay all the shipping charges