The apple watch series 6 has an all-weather retina display on the front, inheriting the full screen design from the apple watch series 4, and supports the always on display function. However, in outdoor conditions, the brightness can reach up to 2.5 times of the previous generation. < p > < p > the case materials of Apple watch series 6 can be made of aluminum, stainless steel and titanium. Among them, the aluminum metal case is added with blue and red on the basis of silver, deep gray and gold; the stainless steel case is added with graphite and gold. In the aspect of health monitoring, apple watch series 6 adds blood oxygen sensor on the basis of electrode type heart rate sensor and the second generation optical heart rate sensor. The sensor uses four sets of green, red and infrared LED clusters, as well as four photodiodes, all integrated into the crystal glass back of the apple watch to measure the light reflected from the blood. < / P > < p > with the new blood oxygen app, apple watch series 6 will calculate the monitored data by algorithm. The algorithm can measure the blood oxygen level between 70% and 100%, and the wearer’s blood oxygen saturation can be measured in 15 seconds at the earliest. < p > < p > Apple also announced at the press conference that it is currently conducting three health studies with researchers, including using apple watch to explore how to use blood oxygen level data in future health applications: Apple will work with the University of California, Irvine and Anthem worked together to study how longitudinal blood oxygen measurements and other physiological signals can be used to control asthma. < / P > < p > although the battery life of the apple watch series 6 is still maintained at 18 hours, battery life has improved when tracking specific physical training such as indoor and outdoor running. In addition, it also supports faster charging speed, and the charging rate from 0% to 100% is reduced from 2.5 hours before to 1.5 hours. < / P > < p > the former, combined with GPS and WLAN, can provide real-time altitude measurement throughout the day, support the detection of small altitude changes with a drop of 1 foot above the ground level, and can be displayed in the form of dial components or physical training data; the latter, like the iPhone 11 series, can be used for short-range wireless positioning, which is one of the key components of Apple’s future ecology. < / P > < p > Apple watch se is a “affordable” Apple watch launched by apple. It has a full screen body and core health monitoring function in its starting price of 2199 yuan. < / P > < p > the design of the apple watch se is similar to that of the apple watch series 3, with a full-scale retina screen on the front (not always displayed), but the case material is available in only three aluminum colors (silver / deep sky grey / gold). In terms of health monitoring, apple watch se only carries one optical heart rate sensor, so it does not support blood oxygen monitoring and ECG, but has basic functions such as heart rate monitoring, fall detection, SOS emergency call, abnormal heart rate warning and other basic functions. < / P > < p > jointly launched with the two apple watches, there are also several Apple wacth watchbands, including single loop watch strap, woven single loop watch strap and leather chain strap, with the price of 379 yuan, 779 yuan and 779 yuan respectively. < p > < p > Apple releases its new iPad air 4 tablet. This time, the iPad air 4 has a new look, with a full screen design similar to the iPad pro. The frame of the air 3 is narrower and the whole machine is thinner than the previous iPad. < / P > < p > the new iPad air 4 comes in five colors, including the classic dark gray and silver, as well as new rose gold, green and sky blue. In terms of processor, the iPad air 4 launched A14 bionic chip, the industry’s first mobile processing chip with 5nm process, with 11.8 billion transistors. The CPU / GPU performance is 40% / 30% faster than the previous generation of iPad air respectively. With the help of faster neural engine, the machine learning performance of iPad air 4 is twice higher than that of the previous generation. < / P > < p > in terms of photo taking, the front 7 megapixel FaceTime HD lens and the rear 12 megapixel camera of the same model of iPad Pro are installed. The iPad air also has two redesigned speakers that support stereo audio in landscape mode. < / P > < p > in addition to the newly designed iPad air 4 tablet, Apple has also launched the best-selling iPad 8 tablet, a user-friendly version of the iPad. The device will become the new entry-level model of iPad, and the biggest change is the upgrade of processor to A12 bionic. < p > < p > the iPad 8 is still equipped with a 10.2-inch retinal display. The built-in chip has been upgraded from A10 fusion to A12 bionic. The CPU performance is 40% higher than that of the previous generation, and the running speed of graphics processing capacity is 2 times faster than that of the seventh generation iPad. < / P > < p > in addition to launching four new products, Apple also announced the launch dates of the official versions of four new systems, including IOS / ipados 14 and watchos 7 on September 17, and MacOS Big Sur in the autumn. Global Tech