商品详情
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)
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
Heart Rate
Like all heart rate tracking technologies, accuracy is affected by physiology, location of device and different movements.
Environmental Requirements
- Operating temperature: -10° to 45° C
In The Box
- Fitbit Versa 4
- Classic band (small & large)
- Charging cable