1. Smartphone refers to a type of mobile phone that, like a personal computer, has an independent operating system and independent running space, and users can install programs provided by third-party service providers, such as software, games, navigation, etc., and can realize wireless network access through mobile communication networks. From 20 19, the development trend of smart phones is to fully join a number of patented technologies such as artificial intelligence and 5G, making smart phones the most widely used patented products.
2. Smart watches are watches that have information processing capabilities and meet the basic technical requirements of watches.
In addition to indicating time, smart watches should also have one or more functions such as reminding, navigation, calibration, monitoring and interaction. Display methods include pointers, numbers, images, etc.
Necklace is one of the ornaments of human body and the earliest jewelry. Some necklaces not only have decorative functions, but also have special display functions, such as Catholic cross chains and Buddhist prayer beads.
Since ancient times, in order to beautify the human body and the environment, people have made necklaces with different styles, characteristics and styles to meet the aesthetic needs of people with different skin colors, nationalities and aesthetics. This paper introduces the style of necklace from two aspects: material and style. As far as materials are concerned, there are several kinds of necklaces in the jewelry market, such as gold, silver and jewelry.
4. A watch refers to a tool worn on your wrist to time/display time. In English, watch comes from the word wacche in the middle ages.
Watches are usually made of leather, rubber, nylon cloth, stainless steel and other materials, and the "meter" showing time is tied on the wrist.
Cosmetics are used to beautify, preserve or change people's appearance (for example, for performance), or to adjust the human body (except soap) for cleaning, dyeing, wiping, correcting or protecting skin, hair, nails, eyes or teeth.