Google Fitbit

Specifications for Google Pixel Watch and Fitbit hardware. Each page carries the full manufacturer specification, battery data, features and activity profiles, alongside an assessment of who the device suits.

Pixel Watch

  • Google Pixel Watch 5: Wear OS 7.0, cloud GPS post-processing, Health Guardian, workout builder. Announced 12 August 2026.
  • Google Pixel Watch 4: Wear OS 6.0, dual-frequency GNSS, satellite SOS, user-replaceable battery. Announced 20 August 2025.

Fitbit

  • Fitbit Charge 6: SpO2, skin temperature, ECG and EDA sensors, with a machine-learning heart rate algorithm adapted from Pixel Watch. Released October 2023.
  • Fitbit Versa 4: Smartwatch with built-in GPS, Amazon Alexa, Google Wallet and Google Maps. Released September 2022.
  • Fitbit Sense 2: Continuous EDA (cEDA) stress sensor, ECG app, altimeter and Wi-Fi hardware, disabled. Released September 2022.
  • Fitbit Air: Screenless activity tracker with no display, connected GPS only, and background AFib detection. Released May 2026.

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