Overview

Charge 4 is made for health and fitness and packed with new features to keep you on track.
Built-in GPS
During outdoor runs, cycles, hikes and more, use built-in GPS to see your pace and distance, then see a map of your workout in the Fitbit app.
24/7 Heart Rate
Use 24/7 heart rate to better track calorie burn, optimise workouts and know how hard you're working as you make moves on your fitness goals.
Active Zone Minutes
Track the time you're spending in your personalised heart-rate zones so you can see if you're meeting the weekly recommendation of 150 minutes.
Workout Intensity Map
After tracking outdoor exercises, get a map of your route and your heart rate zones throughout to see where you put in the most effort.
Heart Rate Zones
See when you are in your personalised fat burn, cardio or peak heart rate zones to optimise effort during workouts.
Resting Heart Rate
Wear Fitbit Charge 4 all day and night to record and reveal your resting heart rate, track heart rate trends over time, and follow your progress.
With a personalised Sleep Score in the Fitbit app and new sleep mode, know how well you've slept each night and limit distractions during sleep.
Choose from your favourite workouts and set a goal and see real-time progress of your effort.
All-Day Activity Tracking
Track steps, distance, floors climbed, calories burned and more to see how every part of your day affects your goals.
Reminders to Move
Stay on track with fun, on-screen reminders that encourage you to move throughout the day.
Automatic Exercise Recognition
Exercises like runs, swims, elliptical, sports and more are automatically recorded for you with SmartTrack.
Water-Resistant
Water-resistant to 50m, Charge 4 automatically tracks swims and can be worn in the shower, pool and beyond.
Guided Breathing Sessions
Take a moment for mindfulness by following an on-screen guided breathing session based on your heart rate.
Notifications & Quick Replies
Get call, calendar, text and smartphone app alerts. Plus, send quick replies to messages on Android.
Spotify Playlists
Amp up your workout by controlling music, liking songs and browsing your playlists & podcasts from Charge 4.⧫
⧫Spotify Premium subscription required. App not available in all countries.
Smart Everyday Experiences
Stay on track with helpful apps to get the weather forecast, set a timer, run a stopwatch and check your calendar.
Long Battery Life
With a battery life of up to 7 days—and up to 5 hours when using GPS—Charge 4 lets you do more with less charging.*
*Up to 5 hours with continuous GPS use; varies with use and other factors.
Fitbit Pay
Make secure purchases when you tap to pay from Charge 4 at millions of shops—no phone or wallet necessary.**
**Transit available in select cities.
Personalised Clock Face
Give your watch the perfect look with unique designs downloadable from the Fitbit app.
Specs
Specification
What's included:
- Fitbit Charge 4
- Classic wristband (both small & large)
- Charging cable
Sensors & Components
- 3-axis accelerometer
- Optical heart rate monitor
- GPS
- Vibration motor
- NFC chip for Fitbit Pay
- Altimeter
Battery and Power
Battery life up to 7 days, or up to 5 hours with continuous GPS use. Battery life and charge cycles vary with use, settings and other factors; actual results will vary. We recommend charging every few days to ensure you’re always tracking.
- Battery type: Lithium-polymer
- Charge time (0-100%): Two hours
- Radio transceiver: Bluetooth 4.0
Memory
- Saves 7 days of detailed motion and heart rate data, minute by minute
- Saves daily totals for the last 30 days
- Measures heart rate data at 1-second intervals during exercise tracking and at 5-second intervals all other times
Water Resistance
Water-resistant to 50 metres. After swimming or 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. We do not recommend wearing Fitbit Charge 4 in a hot tub or sauna.
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.
Materials
This tracker includes a plastic resin case and the band includes a stainless steel buckle. The classic band is made of a flexible, durable material similar to that used in many sports watches. The woven band is made from a comfortable polyester.
Heart Rate
Like all heart rate tracking technologies, accuracy is affected by physiology, location of device and different movements.
Environmental Requirements
- Operating temperature: -20° to 60° C
- Maximum operating altitude: 8,535 m
Syncing
Syncs automatically and wirelessly to most popular phones and tablets using Bluetooth LE wireless technology.
- Syncing range: Up to 9m
- Certain features like smartphone notifications may require Android 7.0+.
- Syncing to mobile devices requires Bluetooth LE and internet connection.
- Syncs with Mac OS X 12.2 and up, iPhone 5S and later, iPad 5 gen. and later, Android 7.0 and later.
- Music control via Bluetooth LE on Android and iOS devices.
Dimensions
35.8mm l x 22.7mm w x 12.5mm h
Warranty
HK Distributor provided 1-year warranty services.