Fitbit Sense

Manage stress with an innovative EDA sensor and put heart health first with an ECG app on this advanced health smartwatch.*

 Innovation that guides you toward better health

Put your well-being first with Daily Readiness Score◆, Health Metrics‡, heart health tracking and stress management tools. Then get elevated guidance and personalised insights with Premium.†

Daily Readiness◆

Redefine your routine

Do what's best for your body every day with a personalised Daily Readiness Score that reveals whether you're ready to work out or should prioritise recovery. You’ll also receive insights from your exercise, sleep and heart rate variability (HRV). Only with Premium.◆ 

Stress Management

Lessen your stress 

Easily understand how your body is responding to stress with the first-of-its-kind on-wrist EDA Scan app and daily Stress Management Score. Then use mindfulness and guided breathing sessions to help manage it. Premium members get exclusive access to deeper insights and meditations from Calm.††

AFib Assessments*

Stay ahead of heart health

There are two ways to uncover AFib, right at your fingertips. With the ECG app, you can take an assessment on demand.* Plus, use irregular heart rhythm notifications to look for signs of AFib while you’re still or sleeping.****

Features

Specifications

What's included:

• Fitbit Sense
• Classic wristband (both small & large)
• Charging cable

Sensors & Components

• Multi-path optical heart rate sensor
• Multipurpose electrical sensors compatible with ECG app & EDA app
• Red and infrared sensors for oxygen saturation (SpO2) monitoring
• Gyroscope
• Altimeter
• 3-axis accelerometer
• Skin temperature sensor
• Ambient light sensor
• Wi-Fi (802.11b/g/n 2.4GHz)
• NFC
• Built-in GPS + GLONASS
• Vibration motor
• Speaker (75dB SPL @10cm)
• Microphone

Battery & Power

Battery life up to 6+ days. Battery life and charge cycles vary with use, settings, and other factors; actual results will vary. Use of the always-on display and SpO2 features will require more frequent charging. We recommend charging every few days to ensure you’re always tracking.

• Battery type: Lithium-polymer
• Charge time: (10-80%): Approximately 40 minutes
• Fast charging: 1 day of battery life in 12 minutes
• Radio transceiver: Bluetooth® 

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 50 metres. 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. Learn more.

Care

Give your wrist a rest by taking the band off every now and then. If the band gets wet or you sweat in it, remove and completely dry the band before putting it back on. Learn more.

Materials

This watch includes a band made of a flexible material similar to that used in many sports watches, as well as an aluminium 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: -10° to 45° C
• Maximum operating altitude: 8,535 m

Compatibility

Google account will be required. See fitbit.com/devices.
The Fitbit app is compatible with most popular phones. To set up and use your Fitbit products and services, you must install the Fitbit app on a compatible device running one of the following operating systems:

• Apple iOS 14 or higher.
• Android OS 8 or higher. See additional tips for Android phones here.

Syncing range: Up to 9m

• Certain features like smartphone notifications may require Android 8+. Check your device compatibility.
• Syncing requires Bluetooth® LE and internet connection.
• Syncs with iPhone 5S and later, Android 8.0 and later.
• Music control via Bluetooth® Classic on Android and Bluetooth LE on iOS devices.

Security and Updates

Legally required software and security updates will be provided.

Band Size

Print this guide to find the right size for you. Both small and large sizes included in box.

Small

• Fits wrist 140 mm - 180 mm in circumference

Large

• Fits wrist 180 mm - 220 mm in circumference

Dimensions

• 40.48mm l x 40.48mm w x 12.35mm h