Comparison of true and false flying swallows 4D mouse: First of all, on the outer packaging, the genuine product has been packed in a new package since the beginning of this year, and the genuine product is purple and the fake product is light green; In the upper left corner of the front of the genuine package, there is an anti-counterfeiting trademark just below "A4TECH". After tearing it off, there is the word "genuine", while the fake has no anti-counterfeiting trademark; The manufacturer's place of origin is printed on the side of the genuine package, and the fake goods are labeled; Typesetting the back of genuine packaging as the left side is two major functions, the right side is three major reasons, and the fake one is the opposite. Then look at the accessories in the box, there is really one more mouse pad than the fake one; On the first line of the cover of the manual, the genuine font is thicker and darker than the fake font, and the printing in the manual is clearer. Attached to the drive disk, the sticker on the real disk is one layer, and the fake one was obviously posted later. I wanted to tear off the sticker on the upper layer to show its true colors, but I couldn't help sticking it too firmly, but I could still see that the bottom layer was in small English font and the upper layer was in large font. Look at the mouse again, the words on the front of the real goods are laser printed, with the same height and clear fonts, which cannot be compared manually. The logo on the back of the real mouse is a silver-white aluminum nameplate, and the fake mouse is a white sticker. There is a big gap between the fake mouse buttons, and other buttons are misplaced when sliding the vertical pulley.