Apple watch series 4 mới
The táo khuyết Watch Series 4 signaled a change in design, including a new larger display, a faster processor, & the key addition of ECG monitoring, giving users more information about their heart health.
● 2018 flagship● Larger edge-to-edge display● kích thước increases khổng lồ 40mm và 44mm● Faster S4 processor● Second-generation optical heart sensor● ECG functionality● Starts from $399 -- $499 with cellular
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Launched on September 12, 2018, the hãng apple Watch Series 4 signaled a departure from the kiến thiết aesthetic of the táo apple Watch Series 3 in favor of a larger yet thinner smartwatch, one that provided all the core functionality of the original with some new features.
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The hãng apple Watch Series 5replaced it when it launched in 2019. The táo Watch Series 6then took the place of the 2019 modelupon its arrival in September 2020. The hãng apple Watch SE now sits in a new mid-ranged spot next lớn the apple Watch Series 3, which lives on as a budget option.
While sharing the same thiết kế language as the apple Watch Series 3, the Series 4 enhances the concept by opting for larger displays. Still using a square OLED Retina display with Force Touch, the 38mm & 42mm sizes have been upsized khổng lồ 40mm & 44mm versions.
The resolutions are 324 by 394 pixels in the 40mm version & 368 by 448 pixels in the 44mm, with both capable of producing 1,000 nits of brightness. The screen change to an edge-to-edge design also results in a display that"s over 30-percent larger than the previous models, while still minimizing the physical impact of offering more screen space.
The 44mm models are 38mm wide & 44mm high, with a depth of 10.7mm. The 40mm versions are 34mm wide, 40mm high, và again with a depth of 10.7mm.
Despite the change in form size making them slightly larger, bands made for earlier models will continue to lớn fit the Series 4.
As usual, one side features the Side Button and Digital Crown, used in concert with the taps & swipes of the main display to move through watchOS. Hãng apple refreshed the Crown once again lớn show a ring instead of a colored dot, with the đen version used to lớn denote the GPS model while red signifies the inclusion of cellular connectivity.
The Digital Crown received a mechanical tăng cấp as well as a visual one, with it gaining haptic feedback.
For audio, the speakers were redesigned lớn be 1/2 louder, with the microphone moved to lớn the opposite side to lớn minimize echoes.
Around the back is the other big external change for the model, with táo refining the optical heart sensor khổng lồ a second-generation version. The sensor fundamentally functions the same way, shining light into the user"s wrist to search for a pulse in a technique known as photoplethysmography, but rather than taking the form of four circles, there is instead one main circle with a single central port for light.
In terms of materials & finishes, the táo khuyết Watch Series 4 shipped in aluminum with silver, gold, & space gray finishes for both GPS và Cellular versions, along with a stainless steel option with polished silver, gold, & space đen options for Cellular models.
The hãng apple Watch Edition option was abandoned for a second time, with the previously sold ceramic option not available khổng lồ purchase for this iteration. Instead, all models of the Series 4 have ceramic backs.
However, táo apple offeredNike+ versionsin silver & space gray aluminum, complete with exclusive Sports Bands & Loops, along with táo bị cắn dở Watch Hermes in a polished stainless steel. Both variants included exclusive watch faces.
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Apple"s tradition of improving its products over time continues with the táo apple Watch Series 4 using the S4 processor, a 64-bit cpu with twice the performance of the S3 used in the previous generation. This lends itself lớn running apps smoother than before, as well as launching said apps quickly.
Along with the processor change is an upgrade khổng lồ the three-axis gyroscope, with its having twice the dynamic range than previously offered, at up khổng lồ 32G. Táo apple also switched over lớn the W3 wireless chip, which enables Wi-Fi connectivity over 802.11n 2.4GHz networks and Bluetooth 5.0 support.
No changes were made to the storage capacity from the Series 3, with users able to lớn take advantage of 16 gigabytes, enabling some music khổng lồ be stored.
Battery life is rated at up to 18 hours of usage, though ultimately this depends on how users actually employ the wearable device each day.
Other onboard elements include GPS, GLONASS, Galileo, and QZSS support, a barometric altimeter, water resistance khổng lồ 50 meters, an ambient light sensor, and tư vấn for both táo Pay & GymKit.
The biggest feature of the táo Watch Series 4 is the inclusion of an electrocardiogram function, or ECG. The first consumer device available over the counter to lớn offer the feature with U.S. Food & Drug Administration approval, users are able to lớn use the ECG app on their táo apple Watch to quickly kiểm tra the status of their heart, beyond the pulse.
Users must complete a circuit by touching the Digital Crown with a finger from the arm that isn"t wearing the táo bị cắn Watch, with the rear heart monitoring sensor array being the second point of contact. After 30 seconds, the táo bị cắn Watch provides an immediate reading of whether it detects a sinus rhythm, signs of atrial fibrillation (AFib), or an "Inconclusive" result.
Regardless of what the táo khuyết Watch advises, the full recording from the reading is offered in the connected iPhone Health app, with the added option to nói qua it with a doctor or other health professional as a PDF.
Unusually for an announced marquee hardware feature, the ECG phầm mềm wasn"t available at launch, with users having to wait until táo apple added support in a later software update. In the United States, the feature was part of watchOS 5.1.2, while other markets had longer waits.
The delays were likely due to apple having to seek regulatory approval for each market it wanted khổng lồ offer ECG functionality, with its only becoming available once granted.
Since its introduction, the ECG function has been credited with potentially saving the lives of many users. Numerous reports have surfaced where users were alerted khổng lồ signs of atrial fibrillation, prompting a visit to their regular physicians và further medical assistance in some cases.
A feature introduced at the same time as the ECG but also usable on older táo apple Watch models is irregular heart notifications, where the táo bị cắn Watch warns if the user"s pulse is unusually high or low for 10 minutes or longer.
The extended dynamic range of the accelerometer also enables a function for detecting if the user has fallen over, including slips, trips, and even car accidents. Once a fall is detected, the táo bị cắn Watch will attempt lớn get a response from the user, & if configured to bởi so, can be set khổng lồ alert emergency services and the emergency contact to the event.
