Last Updated & Fact Checked: April 30, 2026
Are you trying to decide between the Fitbit Charge 3 and the Fitbit Charge 4?
Product Versus will provide you with all the product details so you can quickly compare the facts to find which product is right for you – the Fitbit Charge 3 or the Fitbit Charge 4 – and find out exactly what the differences are.
Both the Fitbit Charge 3 and the Fitbit Charge 4 are quality products, so read on to find out which one is best for your needs!
Fitbit Charge 3 quick facts
Fitbit Charge 4 quick facts
Fitbit Charge 3 product details
Bestseller No. 1
Fitbit Charge 3 Fitness Activity Tracker, Graphite/Black, One Size (S & L Bands Included) (Renewed)
- Better measure calorie burn, understand resting heart rate & more with 24/7 heart rate tracking and a battery life of up to 7 days (varies with use and other factors)
Bestseller No. 2
Fitbit Charge 3 Fitness Activity Tracker, Graphite/Black, One Size (S and L Bands Included)
- Better measure calorie burn, understand resting heart rate & more with 24x7 heart rate tracking and a battery life of up to 7 days (varies with use and other factors); charge time (0 to 100%) 2 hours
- Choose from 15 plus exercise modes like run, bike, swim, yoga, circuit training and more, set a goal, and get real time stats during your workouts to see how you can keep getting better
- Automatically record time spent in light, deep and REM sleep stages, see Activity trends, healthy insights, and personalized guidance in one place with Fitbit today. Operating temperature is -10° to 45° Celsius
- Swim proof and water resistant to 50 meters, so you can track swims and wear in the shower; we do not recommend wearing charge 3 in a hot tub or sauna; also connect to Smartphone GPS for real time pace and distance during outdoor runs and rides
- Stay connected to your day with everyday apps for weather and more and get called, text and smartphone app notifications on your wrist; small wristband fits a wrist between 5.5 to 7.1 inches; large wrist band fits a wrist between 7.1 to 8.7 inches
Bestseller No. 3
Fitbit Charge 3 Fitness Activity Tracker, Rose Gold/Blue Grey, One Size (S and L Bands Included)
- Better measure calorie burn, understand resting heart rate & more with 24/7 heart rate tracking and a battery life of up to 7 days (varies with use and other factors). Charge time (0 to 100 percent): 2 hours. The operating temperature is 10 to 45 degrees Celsius
- Choose from 15 plus exercise modes like run, bike, swim, yoga, circuit training and more, set goals, and get real time stats during your workouts to see how you can keep getting better; with aerospace grade aluminum, a smooth flush case and corning gorilla glass 3, charge 3 is comfortable and durable
- Automatically record time spent in light, deep and REM sleep stages and see activity trends, health insights and personalized guidance in one place with Fitbit today; Fitbit products are compatible with most devices that have the following operating systems: apple iOS 11 and higher, Android OS 7.0 and higher, or windows 10 v1607 or higher
- Swim proof and water resistant to 50 meters, so you can track swims and wear in the shower (we do not recommend wearing charge 3 in a hot tub or sauna). Also, connect to Smartphone GPS in real time, pace and distance during outdoor runs and rides. Radio transceiver: Bluetooth 4.0
- Stay connected to your day with everyday apps for weather and more and get called, text and smartphone app notifications on your wrist. Small band: fits wrists 140 millimeter to 180 millimeter in circumference, large band: fits wrists 180 millimeter to 220 millimeter in circumference
Fitbit Charge 4 product details
Bestseller No. 1
Fitbit Charge 4 Fitness and Activity Tracker with Built-in GPS, Heart Rate, Sleep & Swim Tracking, Rosewood/Rosewood, One Size (S &L Bands Included)
- Use built-in GPS to see your pace and distance on screen during outdoor runs, rides, hikes and more and see a workout intensity map in the app that shows your heart rate changes along your route
- With Active Zone Minutes, feel a buzz when you reach your target heart rate zones during exercise, and celebrate when you earn extra minutes outside of exercise
- Use 24x7 heart rate to track resting heart rate & better measure calorie burn. 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
- See your SpO2 nightly average and range on wrist, and view trends over the past week in the Fitbit app (SpO2 is not available in all markets. The SpO2 feature is not intended to diagnose or treat any medical condition or for any other medical purpose)
- Track your skin temperature each night to see how it varies from your personal baseline (Not available in all markets. Only available in the Fitbit app and only displays variation. Not intended for medical purposes)
Bestseller No. 2
Fitbit Charge 4 Black Advanced Fitness Tracker
- Measures Calories Burned And Heart Rate
- Comprehensive Monitoring
- Sleep Tracking
- Built-in GPS
Bestseller No. 3
Fitbit Charge 6 Fitness Tracker with Google apps, Heart Rate on Exercise Equipment, 6-Months Premium Membership Included, GPS, Health Tools and More, Obsidian/Black, One Size (S & L Bands Included)
- Find your way seamlessly during runs or rides with turn-by-turn directions from Google Maps on Fitbit Charge 6[7, 8]; and when you need a snack break on the go, just tap to pay with Google Wallet[8, 9]
New products & alternatives to the Fitbit Charge 3 and the Fitbit Charge 4
New
Milavan Smart Health Ring for Women Men Fitness Tracker with Heart Rate, Blood Oxygen, Blood Pressure, Sleep Monitoring, Step Counting, IP68 Waterproof for iOS and Android, No APP Fee, Rose Gold 10
- 【Size Before You Buy】Before purchasing Milavan, we recommend ordering our sizing kit to try on. If you prefer not to use the kit, please refer to the size chart and measure your finger circumference for a more comfortable fit
- 【Health Monitoring】The slim ring features advanced 4.0 sensors that automatically measure your heart rate, blood oxygen, and blood pressure every 30 min when worn. It provides continuous health tracking and comprehensive wellness management all day
- 【Intelligent Sleep Tracker】The fitness ring automatically monitors your sleep quality. It can record deep & light sleep duration, eye movement, and wakefulness. You can view various indicators anytime in the app and adjust your lifestyle based on reports
- 【8 Sports Modes Tracking】Such as Running, Cycling, Skipping Rope, Walking, Hiking, Yoga, Dancing, and Golf. The smart ring automatically tracks the workout route, sport time, steps, heart rate, speed, calories burned, and distance in the app
- 【Sport & Fitness Stylish Partner】Upgraded to a slim 2mm thickness with a specially polished inner surface,making it comfortably suited for most sports.Activate sports modes to receive data from the app, helping you achieve more effective guidance
New
Kuxlagz Smart Ring Health Tracker for Women, Sleep Tracker and Activity Monitoring, Heart Rate,SPO₂,Blood Pressure, No Subscription, Step Tracker Ring for iOS&Android (Black, #11)
- 【 Perfect fit 】: The Kuxlagz smart ring features a unique size system that is different from standard jewelry rings or other brands. Be sure to pick up the official family sizing kit or measure your size according to the sizing chart.
- 【 Comprehensive Insights】: Monitor your sleep, heart rate, SpO₂, blood pressure, steps, distance, and calorie expenditure. The Kuxlagz smart health bracelet can also track fitness activities such as running and hiking, providing you with detailed data to support your fitness goals.
- 【 Accurate Tracking】: Equipped with precision chips and sensors, unique algorithm processing, more realistic and reliable reflection of your physical condition, becoming your personal health consultant anytime, anywhere.
- 【 Convenient Charging】: The Kuxlagz smart ring has 3-5 days of battery life and comes with a long range charging case for additional charging and safe storage when going out. Perfect for long-distance travel or business trips, make sure your wristband is always fully charged and ready to welcome your adventure at any time.
- 【 Wear all day】: This exquisite health monitoring wristband is designed for both men and women, with 5ATM waterproof rating and titanium steel shell design. It is fashionable and beautiful, and can be worn all day long. Whether you are working, exercising, resting, or handling household chores, the smart ring silently protects you.
New
Smart Ring Health Tracker for Women Men, Sleep Tracker with Heart Rate,SpO₂,Blood Pressure, Fitness Ring for Activity Monitoring, No Subscription, Step Tracker Ring for ios&Android (Enamel color, #6)
- 【 Perfect fit 】: The Kuxlagz smart ring features a unique size system that is different from standard jewelry rings or other brands. Be sure to pick up the official family sizing kit or measure your size according to the sizing chart.
- 【 Comprehensive Insights】: Monitor your sleep, heart rate, SpO₂, blood pressure, steps, distance, and calorie expenditure. The Kuxlagz smart health bracelet can also track fitness activities such as running and hiking, providing you with detailed data to support your fitness goals.
- 【 Accurate Tracking】: Equipped with precision chips and sensors, unique algorithm processing, more realistic and reliable reflection of your physical condition, becoming your personal health consultant anytime, anywhere.
- 【 Convenient Charging】: The Kuxlagz smart ring has 3-5 days of battery life and comes with a long range charging case for additional charging and safe storage when going out. Perfect for long-distance travel or business trips, make sure your wristband is always fully charged and ready to welcome your adventure at any time.
- 【 Wear all day】: This exquisite health monitoring wristband is designed for both men and women, with 5ATM waterproof rating and titanium steel shell design. It is fashionable and beautiful, and can be worn all day long. Whether you are working, exercising, resting, or handling household chores, the smart ring silently protects you.
New
ST-CARE Fitness Tracker with Step Counter/Calories/Stopwatch, Activity Tracker, Health Tracker with Heart Rate Monitor, Sleep Tracker,1.47 Touch Color Screen, Pedometer Watch for Women Men
- 【All-Day Activity Tracking】 The Activity & Fitness Tracker tracks all-day activity, including daily steps, calories burned, workout distance and time, to help you achieve your fitness goals more effectively. You can view detailed data in the app "Keep Health"
- 【1.47-inch HD Touchscreen】 The C82 features a durable stainless steel bezel that pairs perfectly with the skin-friendly fitness band; the 1.10-inch AMOLED HD touchscreen colour design and a variety of refreshed dials are always ready to make you look good
- 【24/7 Heart Rate/Temperature/Sleep Monitoring】This fitness tracker also monitors your heart rate and body temperature throughout the day. This fitness tracker supports real-time dynamic heart rate, blood oxygen, blood pressure, and body temperature monitoring, which makes you more aware of your physical condition. Track your deep sleep, light sleep, and wakefulness stages to better understand the quality of your sleep each night. Sleep monitoring time is at night
- 【Smart Functions】An easy-to-use activity and fitness tracker with multiple smart functions. Including incoming call and message reminder, remote photo, water reminder, sedentary reminder, women's health, family health, alarm clock, stopwatch, find device and more
- 【IP67 Waterproof Fitness Watch】Designed according to the waterproof and dustproof standard, the watch will not be damaged when you wash your hands, take a shower, or get wet
New
MorePro Smart Watch (Answer/Make Call), 1.83” Health Fitness Watch with Heart Rate, Blood Pressure,SpO2 and Sleep Monitor, 100+ Sports Modes, IP68 Waterproof Fitness Tracker for Men Women
- 24/7 Health Monitoring: Stay connected to your wellness with advanced fitness tracker sensors for heart rate, SpO₂, blood pressure, stress, sleep, and women’s health. This activity tracker smartwatch provides round-the-clock insights to help you live smarter and healthier. (Not a medical device.)
- 120+ Sports Modes: Power your performance with 100+ sports modes—running, cycling, basketball, yoga, and more. Track calories, steps, distance, and duration in real time. This health fitness watch keeps up with your workouts indoors and outdoors, boosting motivation and results.
- Dynamic Expressions & Custom Faces: Make fitness fun again! Each time you wake the screen, this smart fitness tracker displays one of nine animated expressions—playful and full of personality. Customize your watch face with photos and control music, camera, and alarms right from your wrist.
- 1.83” Full Touch Display: Enjoy stunning clarity on the 1.83” full-touch screen fitness tracker. Every fitness stat, message, and call detail appears bright and easy to read—even in sunlight. Smooth touch response and vivid colors make this smart watch for men and women a joy to use every day.
- Bluetooth Calls & Smart Notifications: Stay hands-free and connected. Make and answer Bluetooth calls directly on your smartwatch, plus receive call, text, and social media alerts (Facebook, WhatsApp, Instagram, Snapchat, etc.). A perfect Bluetooth call smartwatch for work, travel, and workouts.
Our conclusion on the Fitbit Charge 3 vs Fitbit Charge 4
Both the Fitbit Charge 3 and the Fitbit Charge 4 are high quality products and we are sure you will be happy with either one. In the end it comes down to your budget and the value for money you are looking for.
Either way, the Fitbit Charge 3 and the Fitbit Charge 4 are both excellent products that will more than do their job!