Most owners who are unfamiliar with car navigation products purchase them by directly identifying the brand and price (recommended brands and prices, which we will introduce in the next few issues). Of course, in addition to these methods, the owner In fact, you can also identify the pros and cons during the trial of the product (if it is an online shopping platform, you can only choose a more reliable product).

Earlier, when special audio-visual navigation for special cars was not popular, some merchants made a fortune by selling general-purpose machines, because general-purpose machines are easy to imitate and assemble, and can be produced into finished products through OEM. However, with the rise of special-purpose vehicles, GM machines have already faded out of the market, and imitation and assembly of brand products can basically be avoided.

Select a special car audio and video navigation product, because we can't take apart to look at the internal work of the product, so we can only make a rough judgment from the appearance and use. First, you can start smoothly from the panel docking and keys.

After booting, we can intuitively feel the sharpness of the screen, and the resolution can be known from the parameter configuration, but now many screens have less anti-glare, and the owner can see the screen sensitivity effect directly from the light, because Most machines are difficult to see the delicate picture clearly in the sun, so the owner does not have to worry about this.

Feel the sensitivity of the touch screen with your hands. Xiaobian has tried several times when the function icon does not respond. Then you can play the game to see if the machine is stuck.

Another point will affect the product performance, that is, the heat dissipation of the product, especially in high temperature weather, because the environment of the car itself is not very ventilated, so the heat dissipation of the product itself is more important, otherwise a crash card will appear Machine and other phenomena.

Summary: In fact, the appearance and use of the product can only roughly determine the product's workmanship, and for example, the product's seismic performance, whether the radiation exceeds the standard, it is difficult to determine when we buy, the owner can only choose to work fine A little bit, there are brand products with after-sales protection.