Fitbit Versa 4 - OSFA Black Graphite

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)

Battery & Power

Battery life of 6+ days. Battery life and charge cycles vary with use, settings and other factors; actual results will vary. We recommend charging your tracker every few days to ensure you are always tracking.

• Battery type: Lithium-polymer

• Charge time (0-100%): Two hours

• Radio transceiver: Bluetooth® 5.0

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 Resistant

• Water resistant to 50m. After getting the band wet, we recommend drying the band because, as with any wearable device, it's best for your skin if the band is clean and dry.

Materials

• This 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 device and different movements.

• Environmental Requirements

• Operating temperature: -14° to 113°F