Pixel Watch 3 Loss of Pulse Feature: Rollout Status
Yes, the Pixel Watch 3’s loss of pulse detection feature is rolling out, but it is not yet available to all users. As of now, the feature is being delivered gradually through a server-side update, meaning it may appear on your watch before it appears on a friend’s, even if both are on the same software version.
What Is the Loss of Pulse Detection Feature?
The loss of pulse detection is a safety tool designed to detect when a person’s heart stops beating (cardiac arrest). If the watch senses no pulse for a period of time while you are still, it will check for signs of life by vibrating and sounding an alarm. If you do not respond, the watch automatically calls emergency services and shares your location. This is different from a fall detection or an irregular heart rhythm notification—it is specifically for sudden cardiac arrest.
How Does It Work?
The feature uses the watch’s existing optical heart rate sensor combined with a new algorithm. The sensor shines light into your wrist and measures blood flow. When the algorithm detects an absence of pulse, it triggers a sequence:
- It checks for motion and other signs of life.
- If no response, it starts a countdown with a loud alarm and vibration.
- If you don’t cancel the countdown, it calls emergency services with your location.
The watch also uses motion sensors to confirm you are not moving. The entire process is designed to avoid false alarms, so it only activates when the pulse is absent and you are unresponsive.
Where Is It Available?
Google initially announced the feature for the United States and several European countries, including the UK, France, Germany, and Ireland. However, rollout has been staggered. Some users in the US report seeing the feature in the Fitbit app settings, while others in the same region do not. The feature is not yet available in all countries, and Google has not published a full list of supported regions. If you don’t see it, check your Fitbit app under the Safety & Emergency section.
How to Check If You Have It
To see if the feature has reached your watch:
- Open the Fitbit app on your paired phone.
- Tap your profile picture, then select your Pixel Watch 3.
- Look for “Safety & Emergency” or “Loss of Pulse Detection.”
- If you see it, tap to enable it and follow the setup instructions.
If the option is missing, it may simply not have arrived yet. You can also check your watch’s settings under Safety & Emergency. The feature requires the latest version of the Fitbit app and the watch’s Wear OS software.
Common Problems and Misconceptions
One common misunderstanding is that the feature works like a medical monitor. It is not a diagnostic tool and may not detect all cardiac events. It is designed for sudden loss of pulse while still, not for slow heart rate or other arrhythmias. Another issue is battery life—the feature uses the heart rate sensor more frequently, which can drain battery faster. Some users have reported that the feature is not available even after updating, which is likely due to the server-side rollout. If you are concerned, you can contact your local emergency services or a healthcare provider, but the watch is not a substitute for professional medical care.
Comparison With Other Smartwatches
Apple Watch has a fall detection and a heart rate notification, but it does not have a loss of pulse detection that automatically calls emergency services. Samsung’s Galaxy Watch has a similar feature in some regions, but it is not as widely available. The Pixel Watch 3 is one of the first to offer this specific safety net, which makes it a differentiator. However, the feature is only on the Pixel Watch 3, not on older Pixel Watches, because it requires the new sensor hardware and algorithm.
Safety and Privacy Considerations
When enabled, the feature collects heart rate and motion data. This data is processed on the watch and used only for the detection sequence. If an emergency call is made, your location is shared with emergency services. Google states that the data is not used for advertising and is stored securely. You can turn the feature off at any time, but if you have a known heart condition, it is wise to discuss with your doctor whether this feature is appropriate for you. It is not a replacement for medical alert systems or professional monitoring.
Frequently Asked Questions
Why don’t I have the loss of pulse feature on my Pixel Watch 3?
The feature is rolling out gradually. It may take several weeks after the initial announcement to reach all users. Ensure your watch and Fitbit app are updated to the latest versions, and check the Safety & Emergency settings periodically.
Does the loss of pulse detection work if I’m sleeping?
Yes, it is designed to work while you are still, including during sleep. If your pulse stops and you don’t respond to the alarm, it will call emergency services. However, it may not detect a pulse loss if you are moving (e.g., during exercise).
Can I use this feature if I have a pacemaker?
The feature uses optical heart rate sensing, which may be affected by a pacemaker. Google has not provided specific guidance for pacemaker users. Consult your cardiologist before relying on this feature if you have an implanted device.
Will the loss of pulse feature drain my battery faster?
Yes, it can increase battery usage because the heart rate sensor runs more frequently. Most users will still get a full day of battery, but heavy use or long workouts may require charging sooner.
Does the feature work without a cellular connection?
If your watch is connected to your phone via Bluetooth, the call can be made through the phone. If you have the LTE version, it can call directly. Without any connection, the feature cannot place an emergency call.
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