Instruction: Answer the given question using the supporting document.

Input:
Question: please let me know what kind of 3D system have this projector?
Document: My old CRT TV from 1986 was capable of that kind of 3D. You could do that with the Sega Master System (Space Harrier represent!) That does not make this a 3D projector.The speaker on the unit is poor, but hey, it's a projector.
I recently bought two of these projectors for use in 3D rooms. Also the manual does not say anything about how to use the 3D, several experts have reviewed and does not serve to 3D. I consider this product a consumer deception, a lie created in China to deceive the West, please do not buy it or even think about the money I lost
?Think for yourself, don't trust vendor just on their own words, do little research on Google or else enjoy the worst movie/ video and repent till you don't garbage this product. Don't even dare to watch 3D on this or else I suggest to take medical insurance before buying this projector. lol
Black screen has snowy spots. Reasonable price & clarity. 3D feature not tested as of yet. Limited projector settings for projector screen. Its an OK product for first time buyers & on a budget consumers. You indeed get what you pay for as for the appearance of this item. Manuals included was not helpful & poorly executed. No batteries included with the remote control.
This was my first entry into the projector market. I didn't really know what to expect, and I wasn't really sure what I was getting. The price seemed right so I jumped on it. As it turns out one of the HDMI slots was defective and I'm not entirely thrilled with the overall package, so I'm returning it and trading up for a nicer model.
It's not always noticeable if you're playing a game or watching TV, but if you've got a computer hooked up to it and (say) bring up a command prompt, all of a sudden the text starts to look really funky. It was blurry too. I was not impressed with its performance as a PC display device, even when said PC was hooked up via HDMI.Further, despite what Amazon's listing title would have you believe, it is *NOT* 3D capable.
Did not work. Defective projector had to send back. Upgraded to another more known brand of projector. Was very unhappy with this projector
I am very pleased with this projector, it arrived on time, and the installation was very easy as is the operations. I'm projecting onto a 6'x9' screen, and the picture is simply great. Very good  buy for the money in my opinion.
This is my first projector and while the image came up a little blurry around the edges on the computer, once I play videos or hook up to anything else the video is crystal clear even with the lights on in the house. It was easy to set up too.
Oh it is really quiet, does not heat up and shuts of right away with no cooling down time. This is an awesome projector for the money. Oh and always, (amazon.com) was lightening fast on the shipping, five days ahead of schedule.
Answer: The 3D system is Red & Green 3D system.