Fitbit Sense 2 smartwatch

The Fitbit Sense 2 is a feature-rich smartwatch with a digital touchscreen and integrated GPS, offering advanced health and fitness tracking in a lightweight, water-resistant aluminium case with a white S/L band. It monitors body responses and heart activity throughout the day and pairs with Fitbit OS for guided breathing, exercise, sleep analysis and smartwatch conveniences such as Google Maps turn-by-turn directions and Google Wallet payments.

Advantages

All-day body response tracking detects patterns of stress and provides smart notifications to prompt reflection and use of breathing exercises, meditations or workouts. Detailed sleep analytics including a monthly Sleep Profile and a nightly Sleep Score offer breakdowns of light, deep and REM sleep (Fitbit Premium required for some features). Heart monitoring includes continuous heart rate tracking, on-demand ECG for atrial fibrillation assessment and irregular rhythm notifications. Daily Readiness Score combines recent activity, sleep and heart rate variability to help decide whether to train or recover. Built-in GPS, water resistance to 50 m and compatibility with Google Maps and Google Wallet add practical everyday functionality.

Suitable for

• Users who want continuous stress and body response monitoring
• People seeking detailed sleep analysis and improvement tips
• Those who need ECG and heart-rate-based notifications
• Active users who want workout guidance and a Daily Readiness Score
• Anyone wanting smartwatch features like GPS navigation and contactless payments

Key specifications

• Brand: Fitbit; Model: Sense 2 (FB521SRWT)
• Operating system: Fitbit OS
• Connectivity: Bluetooth (no Wi‑Fi, no mobile network)
• Case material and colour: Aluminium, aluminium colour
• Band: White, S/L size
• Water resistance: up to 50 m
• Weight: 0.2 kg
• Features: all-day body response tracking, ECG app, irregular rhythm notifications, continuous heart rate, Sleep Profile and Sleep Score, Daily Readiness Score, built-in GPS, Google Maps, Google Wallet
• EAN: 810038858371

How to use

Wear the Fitbit Sense 2 on your wrist and pair it with the Fitbit app on a compatible smartphone. Use the body response and stress tracking to monitor daily patterns; follow guided breathing or meditation sessions directly on the watch when prompted. Enable the ECG app for on-demand atrial fibrillation checks and turn on irregular heart rhythm notifications to receive alerts while still or sleeping. Access Sleep Profile and Sleep Score via the Fitbit app or Fitbit Premium to review monthly sleep trends and nightly breakdowns. Use the built-in GPS for outdoor workouts and Google Maps for turn-by-turn directions; add cards to Google Wallet for contactless payments from the watch.

Recommendations

For reliable health insights, wear the watch consistently (including during sleep), keep firmware and the Fitbit app updated, and enable relevant notifications and permissions. Consult a medical professional for any concerning heart alerts or health changes detected by the device.