Your device
What the Pixel Watch knows about you
Pixel Watch (made by Google, part of Alphabet; current model the Pixel Watch 4 from October 9, 2025) is a biometric-primary smartwatch with cardiac AI augmentation, recorded in the new biometric form factor under a new Google company entity, with its health stack running on Fitbit and Google Health algorithms since Google owns Fitbit. Its standout FDA clearance is Loss of Pulse Detection, cleared on February 26, 2025 as the first feature of its kind, which detects a loss-of-pulse event such as cardiac arrest, respiratory or circulatory failure, or overdose and automatically prompts a call to emergency services if the user is unresponsive, alongside the Fitbit-lineage ECG app cleared in 2020 and atrial-fibrillation notifications cleared in 2022 carried into the Pixel Watch. A cap-flag applies because Loss of Pulse Detection is not a cardiac-monitoring or diagnostic feature and is explicitly excluded for users with preexisting heart conditions or those needing cardiac monitoring, with Google noting it may not detect every instance, so marketing it as general heart safety for cardiac patients exceeds the indication, and the cited 98.7-percent sensitivity and 100-percent specificity ECG figures are Google-reported algorithm performance. Fitbit, also Google-owned through its 2021 acquisition, is recorded as a separate registry entity, and the Fitbit app was rebranded to Google Health on May 7, 2026 with an optional $9.99-per-month premium tier gating a Gemini-powered AI coach. Its clinical-validation posture is growing, anchored by the large Fitbit Heart Study and Google's own loss-of-pulse validation but with lower independent peer-review volume than Apple, and the exact loss-of-pulse FDA submission number and whether the Pixel Watch 4 adds net-new clearances beyond inherited features are not verified.
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Track this device →What it knows about you
11 findings on record · 11 verified against primary sources
What it collects about you
Where your data goes
What you can control
What it collects about you
The data this device picks up.
Your location
Google collects GPS and motion sensor data from your watch for speed and direction. You can also enable Timeline to build a private map of everywhere you go with signed-in devices.
Your body data
Google collects sleep patterns, heart rate, skin temperature, calories, and steps from your Pixel Watch and processes this data with your consent under applicable privacy laws.
Your body data
Pixel Watch collects sleep patterns, heart rate, skin temperature, calories burned, and steps taken through Fitbit integration; Google also collects account information, device identifiers, IP address, location data via GPS and sensor data, and activity data across Google services.
Where your data goes
Who else can see it once it leaves the device.
Sent to the cloud
Pixel Watch requires a Google Account from first setup with no skip option. Your health data flows through both Wear OS and the Fitbit app simultaneously, two separate Google data pipelines per device. There is no opt-out or offline mode.
Selling your data
Pixel Watch health data flows through the Fitbit app. Whether EU Pixel Watch users are covered by the EU antitrust commitment restricting Fitbit data use for advertising is publicly unresolved. EU Pixel Watch users may have weaker protections than EU Fitbit users under the same household.
Shared with others
Google shares non-personal info publicly and with partners including publishers, advertisers, and developers. Personal info is shared with third parties for processing, legal reasons, or with consent. Health data from wearables is not used for personalized ads.
Selling your data
Google does not sell your personal information and does not share your personal information as defined in the CCPA; data is shared with affiliates and trusted service providers, and non-personally identifiable information may be shared publicly and with partners.
What you can control
Your say over the data it holds.
Deleting your data
Google Health Connect, which aggregates your Pixel Watch data, does not automatically expire third-party app permissions. An app granted access continues to read your daily health data indefinitely until you manually revoke it in settings. Most users are unaware these permissions persist silently.
How long they keep it
Google keeps some data until you delete it, auto-deletes other data after set periods, retains feature usage data for the life of your Google Account, and may keep some data longer for legal reasons. Server deletion takes about two months after you remove data.
Deleting your data
Pixel Watch users can delete content from specific Google services or their entire Google Account, export data via Google Takeout, adjust history and personalization controls, turn off personalized ads, and set data to be deleted automatically after a set period.
How long they keep it
Google retains user-created content until removal, deletes or anonymizes some data automatically after a set period, and retains some data until account deletion; Google uses encryption to keep data private while in transit and restricts access to employees subject to strict contractual confidentiality obligations.
The full record
- Specs
- Pixel Watch (current: Pixel Watch 4, Oct 9 2025; PW3 supported). Sensors: multipath PPG optical HR, ECG (crown + caseback), SpO2, skin temperature, accelerometer; HRV, breathing rate, resting HR. Health stack runs on Fitbit/Google Health algorithms (Google owns Fitbit). Hardware purchase; Google Health Premium $9.99/mo optional (gates Sleep Profile + Gemini AI coach).
- Form Factor
- biometric (biometric-primary smartwatch + AI augmentation; loss-of-pulse / cardiac AI)