Description
Features
Fitness
- Heart rate tracking
- Active Zone Minutes
- Built-in GPS
- Cardio Fitness Score
- Daily Readiness Score
- Automatic exercise tracking
- Exercise modes
- Water resistant
- Workouts on your phone
- Steps, distance & calories
Health
- SpO2 (blood oxygen) tracking
- Resting heart rate
- High & low heart rate notifications
- Heart rate variability
- Skin temperature variation
- Breathing rate
- Wellness report
- Blood glucose tracking (in app only)
- Menstrual health tracking
Sleep and Stress
- Sleep tracking & sleep stages
- Sleep Profile
- Sleep Score
- Smart Wake alarm
- Stress Management Score
- Mindfulness sessions
- Relax breathing sessions
- Reflections
Smart & More
- On-wrist Bluetooth® calls
- Call, text and app notifications
- Alexa Built-in
- Google Maps
- Google Wallet
- Fitbit Pay
- Find My Phone
- Always-on display mode
- Do not disturb & sleep mode
- Fast charging
- 6+ day battery
- Thin, lightweight design
- Color touchscreen
- Clock faces & accessories
- Compatible with iOS and Android devices
Specifications
Sensors & Components
- Multi-path optical heart rate sensor
- Red and infrared sensors for oxygen saturation (SpO2) monitoring
- Altimeter
- 3-axis accelerometer
- Ambient light sensor
- NFC
- Built-in GPS + GLONASS
- Vibration motor
- Speaker (75dB SPL @10cm)
- Microphone
- WiFi (deactivated, cannot be turned on)
- Device temperature sensor (skin temperature variation available in the Fitbit app)
Memory
- Saves 7 days of detailed motion data, minute by minute
- Saves daily totals for the last 30 days
- Stores heart rate data at one-second intervals during exercise tracking and at five-second intervals all other times
Water Resistance
- Water resistant to 50m (164 feet). After getting the band wet, we recommend drying it for cleanliness and skin health.
Materials
- The watch includes a band made of a flexible material similar to that used in many sports watches, as well as an aluminum watch case and buckle.
Heart Rate
- Like all heart rate tracking technologies, accuracy is affected by physiology, location of the device, and different movements.
Syncing
- Syncing range: Up to 30ft (9 meters)
- Certain features like smartphone notifications may require Android 9+. Check your device compatibility.
- Syncing requires Bluetooth® LE, an internet connection, and location permissions granted on the phone.
Environmental Requirements
- Operating temperature: -14° to 113°F (-10° to 45°C)
Band Size:
- Small: Fits wrist 5.5" - 7.1" (14 - 18 cm) in circumference
- Large: Fits wrist 7.1" - 8.7" (18 - 22 cm) in circumference
Dimensions
- 1.5in l x 1.5in w x 0.45in h (3.8 cm x 3.8 cm x 1.1 cm)
Battery & Power:
- Battery life of 6+ days. Battery life and charge cycles vary with use, settings, and other factors.
- Battery type: Lithium-polymer
- Charge time (0-100%): Two hours
- Radio transceiver: Bluetooth® 5.0
Compatibility
- Google account will be required. See fitbit.com/devices.
- The Fitbit app is compatible with most popular phones running:
- Apple iOS 15 or higher
- Android OS 9 or higher. See additional tips for Android phones here.