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Google Pixel Watch 3 45mm matte black aluminum case obsidian band

Google

Google Pixel Watch 3 45mm GA05773-US smart watch

SKU CH-PV85-5Y4CZ MPN GA05773-US

A 45mm Android smartwatch with heart-rate, ECG, sleep and stress tracking plus 24-hour battery life

  • Size45mm
  • CompatibilityAndroid
  • Bigger 45 mm Actua display for clearer viewing
  • Advanced Fitbit running tools help improve pace
  • New readiness and cardio load metrics guide recovery
  • 24-hour battery keeps you connected all day
  • Works with Android 10.0+ phones and Google ecosystem

Built for Android performance

The Pixel Watch 3 comes in a 45mm matte black aluminium case with an Obsidian band and LTE connectivity. It runs the Actua display and includes Fitbit advanced running tools plus readiness and cardio load tracking. The watch is only compatible with Google Pixel and Android phones on Android 10.0 or newer. It also works with Pixel Buds and Nest cameras and doorbells.

Upgrade from basic tracking

This model replaces a simple step counter or an older Wear OS watch that lacks Fitbit integration. The jump is worth it when you want built‑in ECG, fall detection, stress tracking and contactless payments on your wrist. It is not for buyers who need iOS compatibility or a watch that runs independently of a paired phone.

Check phone and band fit

Verify your handset runs Android 10.0 or newer and is a Google Pixel or other supported Android device. Confirm the 45mm case size suits your wrist and that the Obsidian band style matches your preference. Ensure you have a Google account for setup and Fitbit features.

Highlights

  • Bigger 45 mm Actua display for clearer viewing
  • Advanced Fitbit running tools help improve pace
  • New readiness and cardio load metrics guide recovery
  • 24-hour battery keeps you connected all day
  • Works with Android 10.0+ phones and Google ecosystem

Specifications

BrandGoogle Wireless
Size45mm
CompatibilityAndroid
Shipping weight0.45 kg
Package size127 × 127 × 127 mm

Questions about this item

What wrist size does the 45mm case fit?

The 45mm case is designed for a standard adult wrist; the included Obsidian band adjusts to fit most sizes and uses a quick-release mechanism for easy swaps.

How do I set up the LTE model with my Android phone, and what step is often missed?

Pair it through the Pixel Watch app on a phone running Android 10.0 or newer, then activate an LTE plan with your carrier — skipping carrier activation leaves you on Bluetooth only.

When will the 24-hour battery need replacing, and how is it done?

The sealed rechargeable battery typically lasts several years; when capacity drops noticeably, replacement requires Google-authorised service because the case is not user-serviceable.

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