Apple Smartwatch Series 7 with SpO2 Tracking App
The Apple Smartwatch Series 7 is one of the best Apple watches which has been improved over the years Apple with many new features and capabilities. The new Apple Smartwatch was launched this year with a bigger display, a new S7 SiP, a crack-resistant display, and fast charging.
Apple Smartwatch Series 7 also features SpO2 tracking which was introduced during the launch of Apple Watch Series 6. The SpO2 tracking app can be used to measure the blood oxygen saturation percentage and the oxygen levels in your blood and how it tends to remain relatively constant, even during exercise and sleep.
The Apple Watch Series 7 is a big leap over the Apple Watch Series 6 or just a small iterative step? I put the Apple Watch Series 7 to the test to find out.
The new Apple Watch is available in the market with 3 case materials
- Stainless steel
The Apple Smartwatch aluminium case is available in 5 colour finishes
The stainless steel case of the Apple Watch is available in
While the Apple Smartwatch Series 7 titanium case is available in
- Space Black
Apple Smartwatch Series 7 sizes are 41mm and 45mm dimensions. Users have the choice of a GPS-only watch or one with GPS + Cellular connectivity. There are many strap options to choose from as well.
Apple Watch Price in the United State
- 41mm Aluminum (GPS) $399
- 45mm Aluminum (GPS) $429
- 41mm Aluminum 41mm (GPS + Cellular) $499
- 45mm Aluminum (GPS + Cellular) $529
- 41mm Stainless Steel w/ Sport band (GPS + Cellular) $699
- 45mm Stainless Steel w/ Sport band (GPS + Cellular) $749
- 41mm Stainless Steel w/ Milanese Loop (GPS + Cellular) $749
- 45mm Stainless Steel w/ Milanese Loop (GPS + Cellular) $799
- 41mm Titanium (GPS + Cellular) $799
- 45mm Titanium (GPS + Cellular) $849
- 41mm Nike (GPS) $399
- 45mm Nike (GPS) $429
- 41mm Nike (GPS + Cellular) $499
- 45mm Nike (GPS + Cellular) $529
The stainless steel and titanium cases of the Apple Smartwatch Series 7 command significant premiums. The Apple Watch had a 45mm GPS + Cellular unit with a green aluminium case. The Apple Watch Series 7 is the new flagship from Apple and is expensive compared to other smartwatches in the market.
Apple Smartwatch Series 7 Specifications
- Technology: GSM / HSPA / LTE
- Speed: HSPA 42.2/5.76 Mbps, LTE
- Dimensions: 45 x 38 x 10.7 mm (1.77 x 1.50 x 0.42 in)
- Weight: 32 g (41mm), 38.8 g (45mm) (1.13 oz)
- Display: Retina LTPO OLED, 1000 nits (peak), Glass front, ceramic/sapphire crystal back, aluminium frame
- SIM: eSIM
- IP6X certified
- 50m water resistant
- ECG certified (region dependent SW application; HW available on all models)
- Size: 1.9 inches
- Resolution: 484 x 396 pixels (~326 PPI density)
- Protection: Ion-X strengthened glass
- Always-on display
- Operating System: watchOS 8.0, upgradable to 8.1
- Chipset: Apple S7
- CPU: Dual-core
- GPU: PowerVR
- Internal: 32GB
- CardSlot: No
- WLAN: WiFi 802.11 b/g/n, dual-band
- Bluetooth: 5.0, A2DP, LE
- GPS: Yes, with A-GPS, GLONASS, GALILEO, QZSS, BDS
- NFC: Yes
- Radio: No
- USB: No
- Accelerometer, gyro, heart rate, barometer, always-on altimeter, compass, SpO2, VO2max
- Natural language commands and dictation (talking mode)
- Ultra-Wideband (UWB) support
The Apple Smartwatch Series 7 has bigger displays with curved front glass over the sides of the case. The right side of the Apple Smartwatch Series 7 has the digital crown and a multi-function button just below it. Between these two is a microphone hole.
On the left side, you will find a single wide cutout for the speaker, while all the sensors for tracking are on the underside. Users can pair the Apple Smartwatch Series 7 with an iPhone, though the process is seamless.
The Apple Watch Series 7 installs compatible applications that are already on every Smartphone so users can access them on their wrist directly. For cellular models, the process of setting up LTE is simple and quick. Once done, users can stay connected using just LTE and leave their iPhone out of reach, for example, while working out.
Apple Smartwatch Series 7 Battery Performance
Having used an Apple Watch before, your experience will be similar to Smartwatch Series 7. This version of the Apple Watch offered a smooth, lag-free experience. Pressing the digital crown will open up the app drawer on the Apple Watch, and this can be set to zoom in/out and also be used to scroll through menus and notifications.
Apple also adds a sensor on the digital crown for measuring ECGs using Apple Watch Series 7. The smartwatch was quick to respond to touch inputs, and the bigger display compared to previous models did make content a little easier to read. The Contour watch face highlights the new rounded screen edges of the Series 7, while the Modular Duo face shows details of three complications at once.
Apple Watch Series 7 Health Features
The very first health feature of the Apple Smartwatch Series 7 that wowed me is the fitness test feature. Apple Fitness is a different kind of fitness experience. There are new workouts every week, from 5 to 45 minutes. Eleven workout types, including
Introduction of guided Meditation, with video and audio sessions to help you focus on your overall wellbeing. And personal metrics from Apple Watch are synced to your iPhone, iPad, and Apple TV. Stay motivated with real‑time metrics, like your heart rate, on-screen.
You can measure your blood oxygen level with a revolutionary sensor and app. Take an ECG anytime, anywhere. Check your heart rate. Along with other innovations like mindfulness and sleep tracking to keep you healthy from head to toe. Series 7 puts more health insights insight.
Your blood oxygen level is a key indicator of your overall wellness. Apple Smartwatch Series 7 can help you understand how well your body is absorbing oxygen and the amount of oxygen delivered to your body. The remarkable sensor and app in Apple Watch Series 7 allow you to take on‑demand readings of your blood oxygen as well as background readings, day and night.
How to Set up the Blood Oxygen app and background readings
- On your iPhone, open the Health app.
- Follow the onscreen steps. If you don’t see a prompt to set up, tap the Browse tab, then tap Respiratory > Blood Oxygen > Enable.
- After you complete setup, open the Blood Oxygen app on your Apple Watch to measure your blood oxygen levels.
- If you still don’t see the Blood Oxygen app on your Apple Watch, you can search the App Store on your Apple Watch for Blood Oxygen and download it.
The Blood Oxygen app is installed during the setup in the Health app. If you deleted the Blood Oxygen app, you can install it again from the App Store on your Apple Watch if you’ve completed the Blood Oxygen app setup.
Steps to make a blood oxygen measurement
You can take a blood oxygen measurement at any time with the Blood Oxygen app.
- Make sure that your Apple Watch is snug but comfortable on your wrist.
- Open the Blood Oxygen app on your Apple Watch.
- Stay still, and make sure your wrist is flat with the Apple Smartwatch Series 7 facing up.
- Tap Start, then keep your arm steady for 15 seconds.
- Wait. The measurement takes 15 seconds. At the end of the measurement, you will receive the results.
- Tap Done.
How to get the best results
- Rest your arms on a table or in your lap while you take a measurement. Keep your wrist and palm down and flat, and hold as still as you can.
- Make sure that your Apple Watch isn’t loose on your wrist. The band should be snug but comfortable, and the back of your Apple Watch needs to be touching your wrist.
- Make sure that the back of your Apple Watch is flush with the top of your wrist. If your wrist bones interfere with this, move your watch 1 to 2 inches up your arm away from your wrist bone.
You can also use the Apple Smartwatch Series 7 to take an ECG
With the ECG app, Apple Smartwatch Series 7 is capable of generating an ECG similar to a single-lead electrocardiogram. It’s a momentous achievement for a wearable device that can provide critical data for doctors and peace of mind for you.
Your finger can tell you a lot about your heart. The electrodes built into the Digital Crown and the back crystal work together with the ECG app to read your heart’s electrical signals. Simply touch the Digital Crown to generate an ECG waveform in just 30 seconds. The ECG app can indicate whether your heart rhythm shows signs of atrial fibrillation — a serious form of irregular heart rhythm — or sinus rhythm, which means your heart is beating in a normal pattern
How to use the ECG App of the Apple Smartwatch Series 7
The Apple Smartwatch Series 7 ECG app can record your heartbeat and rhythm using the electrical heart sensor on Apple Watch Series 4, Series 5, Series 6, or Series 7* and then check the recording for atrial fibrillation (AFib), a form of irregular rhythm.
The ECG app records an electrocardiogram which represents the electrical pulses that make your heartbeat. The ECG app checks these pulses to get your heart rate and see if the upper and lower chambers of your heart are in rhythm. If they’re out of rhythm, that could be AFib.
How to Install and Set up the ECG app
The ECG app is installed during the ECG app set up in the Health app. Follow these steps to set up the ECG app:
- Open the Health app on your iPhone.
- Follow the onscreen steps. If you don’t see a prompt to set up, tap the Browse tab, then tap Heart > Electrocardiograms (ECG) > Set Up ECG App.
- After you complete the set-up, open the ECG app to take an ECG.
- If you still don’t see the app on your Apple Watch, open the Watch App on your iPhone and tap Heart. In the ECG section, tap Install to install the ECG app.
Step to take an ECG with the Apple Smartwatch Series 7
You can take an ECG at any time when you’re feeling symptoms such as a rapid or skipped heartbeat, when you have other general concerns about your heart health, or when you receive an irregular rhythm notification.
- Make sure that your Apple Watch is snug and on the wrist that you selected in the Apple Watch app. To check, open the Apple Watch app, tap the My Watch tab, then go to General > Watch Orientation.
- Open the ECG app on your Apple Watch.
- Rest your arms on a table or in your lap.
- With the hand opposite your watch, hold your finger on the Digital Crown. You don’t need to press the Digital Crown during the session.
- Wait. The recording takes 30 seconds. At the end of the recording, you will receive a classification, then you can tap Add Symptoms and choose your symptoms.
- Tap Save to note any symptoms, then tap Done.
How the Apple Smartwatch Series 7 ECG App Work
The ECG app on Apple Watch Series 4, Series 5, Series 6, or Series 7 generates an ECG that is similar to a single-lead (or Lead I) ECG. In a doctor’s office, a standard 12-lead ECG is usually taken. This 12-lead ECG records electrical signals from different angles in the heart to produce twelve different waveforms.
The ECG app on Apple Watch measures a waveform similar to one of those twelve waveforms. A single-lead ECG can provide information about heart rate and heart rhythm and enables the classification of Atrial Fibrillation (AFib). However, a single-lead ECG cannot be used to identify some other conditions, like heart attacks.
Single-lead ECGs are often prescribed by doctors for people to wear at home or within the hospital so that the doctor can get a better look at the underlying rate and rhythm of the heart. However, the ECG app on Apple Watch Series 4, Series 5, Series 6, or Series 7 allows you to generate an ECG similar to a single-lead ECG without a prescription from your doctor.
In studies comparing the ECG app on Apple Watch to a standard 12-lead ECG taken at the same time, there was an agreement between the ECG app classification of the rhythm as sinus or Atrial Fibrillation (AFib) compared to the standard 12-lead ECG.
The ability of the Apple Smartwatch Series 7 ECG app to accurately classify an ECG recording into AFib and sinus rhythm was tested in a clinical trial of approximately 600 subjects and demonstrated 99.6% specificity concerning sinus rhythm classification and 98.3% sensitivity for AFib classification for the classifiable results.
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