The Fitbit Charge 5 and Pixel Watch both look to have the same health sensors.

Questions regarding Google’s Pixel Watch now focus on the software and internal hardware specifications because the design has been completely revealed. The rear sensors on the Pixel Watch are very similar, if not identical, to those on the Fitbit Charge 5 and Luxe, which may provide some insight into the health features.

The Pixel Watch’s health sensor consists of four cutouts. White, with two squares at the bottom, and slightly smaller than the other three rectangles is the rectangle in second from the left. The Fitbit sensor used in its most recent non-smartwatch fitness trackers has this setup.

The Charge 5 and Luxe have an optical heart rate monitor, red and infrared sensors for monitoring oxygen saturation (SpO2), and a temperature sensor for tracking skin temperature over the course of the night. It offers features including continuous heart rate monitoring, heart rate variability, VO2 max, and more.

The rear crystal electrodes required to read your electrical heart impulses for an electrocardiogram, however, could be the distinct semicircles encircling the centered sensor (ECG). Other watches with ECG functionality need you to touch another spot on the watch casing in order to get a reading. The second sensor can be a component of the bottle-cap-shaped crown or the sole top button.

L-R: Luxe, Fitbit Charge 5, Pixel Watch

Given that the Fitbit Luxe is $129 and the Charge 5 is $149 , employing a Fitbit sensor for the Pixel Watch could result in cost savings. That would be a wonderful synergy from the 2021 acquisition and would indicate that the Pixel Watch was still actively being developed in January of last year when the deal was finalized.

Both trackers provide an excellent health monitoring experience, but Fitbit benefits from using existing hardware by preserving and maintaining the quality of the data that enters its app and is shown on the watch. After all, we already know that Wear OS 3 will feature the Fitbit dashboard UI that is present on the Fitbit Sense and Versa 3.

It’s likely that the Fitbit sensor was just used for that prototype even though the Pixel Watch hardware that leaked over the weekend appears to be almost complete. Despite this, it makes a lot of sense for Google and Fitbit to share components.

Wear OS 3
Wear OS 3 screenshots

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