The back-crystal sensor on an Apple Watch packs green, red, and infrared LEDs alongside a photodiode array.
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Inside Apple Watch ECG: how a single Lead I electrode becomes an
Inside Apple Watch ECG: how a single Lead I electrode becomes an FDA-cleared rhythm strip The Apple Watch ECG records…
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Apple Pencil Pro vs Apple Pencil USB-C on iPad mini 7: Barrel Roll Compared
By Zeina Haddad The decision between Apple Pencil Pro ($129) and Apple Pencil USB-C ($79) for the iPad mini 7…
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Inside AirPods Pro’s Head-Tracking Pipeline: How H2 Calculates Spatial Audio Position
In this post: What sensors does the H2 chip actually read? · How does orientation data become a change in…
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AirPods Max 2 Firmware 6E188 Adds USB-C Lossless at 24bit/48kHz Finally
Dated: March 22, 2026 — AirPods Max 2 firmware 6E188 A recent firmware update finally pulls the AirPods Max 2…
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Ultra 3 Depth App Freezes at 2.1m on watchOS 26.2 Build 24S320 Until Water Lock Cycles
On watchOS 26.2 build 24S320, the stock Depth app on Apple Watch Ultra 3 stops updating its depth readout the…
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Vision Pro 2 Battery Swap Teardown Shows Apple’s New Pentalobe Trap
The external battery pack is still the part of the Vision Pro that dies first, and with the second-generation headset…
Read MoreAirPods Max 2 Review: Testing the $549 Translation Heavyweight
AirPods news: Well, I have to confess - I was sitting in a ridiculously loud coffee shop in downtown Seattle…
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AirPods Pro 3: The 120-Day Reality Check
The Honeymoon Phase is Over I've had the AirPods Pro 3 in my ears almost every single day since they…
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The Rumored ‘Ultra’ AirPods Pro: My Wallet Is Already Crying
I was just sitting here, minding my own business, trying to get some work done on a gloomy Monday morning.…
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