How do I choose between the 41mm and 45mm Pixel Watch 4 sizes?

Both sizes offer identical breakthrough features including satellite SOS, user-serviceable design, and Gemini AI coaching. The 45mm provides larger display and superior battery life (40 hours vs 30 hours), fitting wrists 150-215mm circumference. The 41mm offers classic, lighter profile fitting wrists 130-210mm circumference. Choice depends on display preference, battery needs, and wrist fit.

What breakthrough features does Pixel Watch 4 offer that competitors cannot match?

Four revolutionary capabilities no competitor offers: (1) Satellite SOS emergency communication enabling distress signals without cellular coverage, (2) User-serviceable design with replaceable battery and display components, (3) Actua 360 domed display with 3000 nits brightness, (4) Gemini AI personal health coach with 24/7 guidance and raise-to-talk activation.

Which phones are compatible with the Pixel Watch 4?

Compatible with Google Pixel and Android phones running Android 11.0 or newer. Optimal experience achieved with Pixel phones for exclusive satellite emergency communication, Gemini AI integration, and camera remote control capabilities. Google Account required for full feature access.

How does the satellite SOS emergency communication work?

Industry-first capability enabling distress signals and emergency service communication in remote locations without cellular or Wi-Fi coverage. Uses advanced satellite network technology with 2-year free service included and global coverage. Functions in areas where no other smartwatch can operate.

Is the Pixel Watch 4 water resistant?

Yes, features comprehensive water resistance with 50 meters (5 ATM) depth capability and IP68 protection. Supports ocean swimming, pool activities, showering, water sports, and complete submersion protection with Water Lock Mode for automatic water ejection.

How does the revolutionary repairability design work?

First user-serviceable Pixel Watch with replaceable battery and display components. Enables cost-effective maintenance at fraction of full device cost, supporting 5+ year usage with component replacement. User-accessible battery replacement takes 15-30 minutes with official kits. Display replacement available through professional service network.

What advanced health features are available on Pixel Watch 4?

Breakthrough Loss of Pulse Detection (FDA-cleared), Gemini AI health coach with 24/7 guidance, 18% more accurate sleep tracking, multi-path heart rate sensor, skin temperature monitoring, ECG readings, and continuous SpO2 monitoring. Includes 6-month Fitbit Premium trial for advanced analytics.

Do I need a phone to use the Pixel Watch 4?

Initial pairing requires compatible Android phone. LTE model enables independent operation for calls, texts, music, Google Pay, and Gemini Assistant. Bluetooth/Wi-Fi model requires phone proximity or Wi-Fi connection. Both models include satellite SOS emergency communication operating independently.

Compass: Accurate Compass

Name: Google Pixel Watch 4
Brand: Google
Availability: PreOrder
Rating: 4.8 (1250 reviews)

Compass is a top-tier navigation app with 5 million+ downloads and a 4.6★ rating, offering accurate compass readings, altimeter data, and GPS coordinates on your WearOS watch.

Best for: Hiking navigation, outdoor adventures, offline direction finding

Download: Play Store | Phone: Standalone | Offline: Full | Battery: Low

WearOS Features

Navigate confidently with precision tools on your wrist.

Accurate Compass: True north compass navigation optimized for outdoor adventures.
Altimeter Data: Precise altitude readings to track elevation during hikes.
GPS Coordinates: Detailed longitude and latitude information at your fingertips.
Offline Mode: Access navigation features without an internet connection.

Outdoor Essential

Calibrate your compass before each hike by rotating your wrist in a figure-8 pattern.

Compatibility

Detail	Value
Developer	Prometheus Interactive LLC
Rating	4.6★ (40.7K reviews)
Downloads	5 million+
Price	Free (IAP £0.99-£99.99)
Category	Maps & Navigation
App Size	~8 MB
Content Rating	PEGI 3
Last Updated	Dec 2025
Requires	`WearOS 2.0+`

Getting Started

Install Compass on your WearOS watch from the Play Store.
Open the app and allow location permissions for GPS functionality.
Calibrate the compass by moving your wrist in a figure-8 motion.
Check that the compass points accurately to magnetic north.
Enable altitude tracking if you need elevation data for your activity.
Use offline mode when venturing into areas with limited connectivity.

Essential tools for hikers, travelers, and outdoor enthusiasts.

Magnetic North: Accurate magnetic compass for basic navigation needs.
True North Option: Switch to true north for more precise map navigation.
Coordinate Display: View your exact GPS position in multiple formats.
Elevation Tracking: Monitor altitude changes throughout your journey.

Best For Hikers

Perfect for trail navigation when your phone is tucked away in your backpack.

Why Compass on WearOS

Phone-Free Navigation: Navigate outdoor trails without pulling out your phone.
Reliable Offline: Works in remote areas with no cellular or WiFi connectivity.
Quick Reference: Glance at your wrist for instant directional guidance.
Lightweight: Essential navigation without draining your watch battery.

WearOS Features​

Outdoor Essential

Compatibility​

Getting Started​

Navigation Tools​

Best For Hikers

Why Compass on WearOS​

WearOS Features

Compatibility

Getting Started

Navigation Tools

Why Compass on WearOS