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

Input:
Question: Is  this a us product
Document: Well, I believe that is the question most of us ask ourselves. I own several 600's and mainly do off-camera lighting so I decided I probably would enjoy having this in the arsenal.During my first use at a wedding it made its mark. It was a good purchase. It worked flawlessly.
But Canon makes one of the greatest radio flash triggers of all time... One of the greatest radio flash triggers of all time." That ignores the omissions of important features many of us need in varying applications for our work. What about Pocketwizards? This has virtually the exact same functionality as a Pocketwizard, but the Pocketwizards are cheaper.
Great Product! Shipped fast! It was as exactly as described. A lot to learn, but once you watch a few tutorials this is great to have.
The product is AMAZING I really loved it ,, it was shipped really fast and it was boxed in a good way .. I'm happy for buying it
amazingly with 5d3 ' I have used the product with 5d3 and 7d ' Really cool , I can sync with 600 ex-rt  1/8000Thanks Canon, farewell Pocket Wizard
For what it is, a 600EX-RT without the actual flash, this is a superb product, even for pre 2012 bodies despite Canon's warnings. By now everybody who is interested in one knows it does not have an AF assist beam, but why?
Canon could have definitely made these better.So Canon. I summarize my suggestions to you for the Version 2 with three points: 1. Add an AF Assist beam to this product. 2. Add a swivel head screen to this product for horizontal and vertical viewing. 3. Add an optical transmitter functionality.
I purchased this to control my two canon flashes. I set both flashes to slave, turned on the transmitter and it worked great. Like the flashes, some of the menus are a little clunky. For example, changing the flash ratios between the two units is a little confusing. Overall, it is a great product with a good range and mostly easy to use.
Be gone sync cables and IR transmissions! It is amazing how well this product works and how convenient wireless radio transmission is.Another big plus over other forms of radio transmission is the ability to not only trigger flashes but to control and adjust the settings remotely. This is a huge. I no longer have to constantly walk from camera to flash and back making minor adjustments and tweaks. I can do it call from the back of my camera now!
Amazing product! The radio transmitter works flawlessly around corners and distances unthinkable to cover with the old IR transmitter. The only thing I don't understand is what took Canon so many years to build radio flashes? After all, we are now in the second decade of the 21st century! To me this technology has been available for many years. Another feature I like is how you can control the power of the flash from the transmitter. They should have done the same about controlling the zoom remotely.
Answer: US models are made by Canon in Japan for the USA and have a USA Warranty