Instruction: Answer the given question using the supporting document.

Input:
Question: How do I get a sample to see if it works on my GPS?
Document: The only source I found for a map of Japan card with this site and Garmin itself. Japan is very difficult to navigate. There are few street or road signs and an address will only get you to the general area. Have no idea how they deliver mail there.I used a Garmin unit that had European road maps pre-installed and let me tell you that I couldn't have driven Germany, Switzerland and Austria without it. I did it once before GPS exosted and road maps will only get you lost.
I installed this into my Garmin Etrex 20. It couldn't be easier. Before purchasing, I contacted the seller for a sample map and he responded quickly and sent me a map file to upload on to the GPS unit. I haven't used it outside of my home area yet. I'll try to update it when I take it to another country. My GPS unit takes longer to boot up because there are so many waypoints and info. I disabled all the maps except for my home range.
well i have been able to use it yet because it won't work with my GPS unit. (NAV IGO 8) please advice and let me know all the GPS that this chip works on.
i  just came back from indonesia and it works great even showed me paths  for walking around volcanos and waterfalls
worked with GPS on the job years ago but it's been a long time!!. John was extra helpful in answering questions via Email so I rate the support as first class.The product was as advertised. Used it in southern Italy with an ETREX - 20 and it was a godsend.
Quite a surprise! The contents of the SD card are fantastic. An absolutel bargain for World Maps for the Garmin. I installed the &#34;med.eastasia&#34; file which included maps of Japan in my Garmin Nuvi GPS unit.. The SD card contains 8 files for each region of the world. You can only install one region at a time due to the limit memory of the Garmin memory.
What's nice about the Garmin, your directions can be set up for Auto, Bicycle, or Walking. You can't do Japan by simply renting a car. You'd have to have some place to partk it and there's no place to park. The trains are the only way to go. This is a third party card, but the genuine Garmin will cost over 8 times as much, so I took a chance that it would work, and so far it does. Very well pleased!
Somewhere in the Garmin menu there is an option to change countries. I typed in Japan. Then typed in a city and by gosh it worked. Every option like points of interest, places to shop, etc. worked. The only thing that I don't know yet if it will work to give you directions after you press &#34;Go&#34;. If you do press &#34;Go&#34; it gives you the starting point, your house.
But you can't drive to Japan. Someone posted on the Interet that he selected his destination as Hawaii on a well know Internet map site, the directions when he reached Los Angeles said to rent an outrigger canoe and paddle for X number of days.When I come back from Japan I'll do another post to let you know how it worked. I don't think that you will find small town destinations in the map system. I typed in &#34;Kyoto&#34; and nothing came up.
The original card is 16 MB, but tou only need a 4 MB card to put into the Garmin Nuvi. Why use the more expensive original card when you only need 4 MB to change a file name and then save it to another SD card. Obviously a computer is a must to do this, and maybe a novice couldn't do it. If you know your way around a computer, it is not difficult at all..
Answer: I think you have to email the seller and ask for them to send you a sample file.  I just did it so I'll report back.  But the thing is, Amazon makes it really hard to contact the seller.   Not the seller's fault but Amazon's.  Here's how I did it:1.  Click "See all buying options" (where the "add to cart" button should be)2.  Click on the seller's name (Dos Arbolitos LLC)3.  On the right hand side, there is "About Seller" and "Recent Feedback".  Click "See all feedback"4.  A box will load next to the feedback.  At the top, it says "For questions regarding products, order delivery, or returns, please contact Dos Arbolitos LLC Customer Service".  Click on that.5.  If you're not logged in, it will prompt your log-in.6.  Drop down menus for the question topic, etc.  Write message.  Good luck!