Last Updated & Fact Checked: March 21, 2026
Are you trying to decide between the Fitbit Charge 2 and the Fitbit Flex 2?
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 2 or the Fitbit Flex 2 – and find out exactly what the differences are.
Both the Fitbit Charge 2 and the Fitbit Flex 2 are quality products, so read on to find out which one is best for your needs!
Fitbit Charge 2 quick facts
Fitbit Flex 2 quick facts
Fitbit Charge 2 product details
Bestseller No. 1
Fitbit Charge 2 Heart Rate + Fitness Wristband, Blue, Large (US Version), 1 Count
- Pure Pulse continuous, automatic wrist-based heart rate tracking to better measure calorie burn all day
- Maximize your workouts using simplified heart rate zones (Fat Burn, Cardio and Peak)
- See call, text & calendar notifications on the OLED display; Automatically track how long and how well you sleep and wake with a silent vibrating alarm
- Get a better understanding of your fitness level and see how you can improve over time with a personalized Cardio Fitness Score; Use Connected GPS during run mode to see real-time stats like pace and distance on your wrist
- Sync stats wirelessly & automatically to computers and 200+ leading iOS, Android and Windows devices.
Bestseller No. 2
Fitbit Charge 2 Heart Rate + Fitness Wristband, Plum, Small (US Version)
- PurePulse continuous, automatic wrist-based heart rate tracking to better measure calorie burn all day
- Maximize your workouts using simplified heart rate zones (Fat Burn, Cardio and Peak)
- See call, text & calendar notifications on the OLED display; Automatically track how long and how well you sleep and wake with a silent vibrating alarm
- Get a better understanding of your fitness level and see how you can improve over time with a personalized Cardio Fitness Score; Use Connected GPS during run mode to see real-time stats like pace and distance on your wrist
- Track all-day activity like steps, distance, calories burned, floors climbed and active minutes;Find moments of calm throughout your day with personalized guided breathing sessions based on your heart rate, Like all heart rate tracking technologies, accuracy is affected by physiology, location of device, and different movements.
Bestseller No. 3
Kissmart Charger for Fitbit Charge 2, Replacement USB Charging Cable Cord for Fitbit Charge2 Smart Wristband (2-Pack, 1.8ft & 3.3ft)
- ▶Compatbility: This replacement charger compatible with Fit-bit Charge 2 only. Does not copatible with Charge 3/Charge 4/Charge 5/Charge 6 or any other model.
- ▶Premium & Speedy: The Charge 2 charging cable is made of high quality wire, provides a stable performance and a fast charging, about an hour a full charge.
- ▶Safe Protection: The charger cable built in PTC, protect your Charge 2 from over-current, over-voltage, over-circuit protection, offers a safe environment for charging.
- ▶Convenient and Easy to Use: To get a boost charging just plug it into USB port on your PC, laptop, notebook, wall charger or car charger. Geting a better experience, we suggest you to use the recommended adapter (5V 1A).
- ▶Package includes: 1 x 1.8ft Charge 2 charging cable, 1 x 3.3ft Charge 2 charging cable (wristband is not included). with sincerely after-sales service, if have any question we will deal with it for you within 24 hours.
Fitbit Flex 2 product details
Bestseller No. 1
Fitbit Flex 2, Black (US Version), 1 Count
- Track steps, distance, calories burned and active minutes. LED display lights up to show progress toward your daily goal
- Ultra-thin, removable tracker hides in bands, pendants and bangles
- Swim proof for tracking, swimming, life proof for wear in the ocean, shower, pool and beyond
- SmartTrack automatically recognizes select workouts and records them to your Fitbit app
- Get call and text notifications on your wrist with unique vibration patterns and color-coded LED lights
Bestseller No. 2
EXMRAT Charger Cable for Fitbit Flex 2, USB Charger Charging Cable for Fitbit Flex 2 (2Pack, 30cm/1ft)
- Replacement Charger Cable For Fitbit Flex 2 (with Reset Button ), Not compatible with Fitbit Flex.
- Cable length : 30cm/1ft. Easy plug and charge..
- High Quality - Over Voltage Protection, Over Current Protection.
- Compact and Lightweight Design - Convenient for travelers and business users
- Package included: 2 x Fitbit Flex 2 charger ( watch was not included )
Bestseller No. 3
Greeninsync Compatible with Fitbit Bands for Flex 2, Adjustable Soft Silicone Sports with Fastener Clasp Fitness Replacement Wristband Strap for Fitbit Flex 2 Smart Watch Large(3Pack)
- Unique design，anti-swing and special groove design inside the flex 2 replacemet strap with extra clear silicon fastener ring, double secure to prevent the end of the flex 2 wristband from sliding out
- 3 colors available, black, navy and gray. Personalize your flex 2 classic band to fit your mood and outfits in daily life with this brand new color choices
- The flex 2 adjustable band is made of a flexible, durable material.
- Two sizes available, small size fits for 5.1"-7.0" wrist. Large size fits for 6.1"-8.5" wrist. Please choose the right size while placing flex 2 watch band
- Classic and Elegant bands will be one of most excellent gift for yourself, your family and friends
New products & alternatives to the Fitbit Charge 2 and the Fitbit Flex 2
New
Milavan Smart Health Ring 2.0 for Women Men, Slim Scratch & Fingerprint Resistant Design, Efficient Chip Fitness Tracker, Monitors Heart, Blood Oxygen & Pressure, Sleep, Steps, Waterproof, Gold 11
- 【Size Before You Buy】Before purchasing Milavan 2.0, 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
- 【Upgraded Core Chip & Free App】Now powered by the advanced AB2026B3 chip with a high-precision sensor, offering higher accuracy, faster response, lower power use, and enhanced health tracking through the free app
- 【Anti-Bump Design】The ring is upgraded to a 7mm width, offering a lightweight and comfortable fit. Its micro-matte finish enhances protection, effectively preventing fingerprint and scratch issues commonly seen in other rings on the market
- 【Health Monitoring】This slim 2.0 ring, equipped with an advanced 5.0 sensor, auto-measures heart rate, HRV, blood oxygen, blood pressure, and stress every 30 minutes, offering continuous tracking and comprehensive wellness insights all day
- 【Intelligent Sleep Tracker】The upgraded supports 24-hour automatic sleep monitoring. Compared with common fixed-time monitoring on the market, it provides more precise tracking of deep sleep, light sleep, rapid eye movement stages, and wake times
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, Gold 12
- 【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
Smart Ring Health Tracker for Women Men, Sleep Tracker with Heart Rate,SPO₂,Blood Pressure, Fitness Ring for Activity Monitoring, No Subscription (Light Gold, 12#)
- 【 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 (Glacial Silver, 12#)
- 【 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 (Rose Gold, 12#)
- 【 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.
Our conclusion on the Fitbit Charge 2 vs Fitbit Flex 2
Both the Fitbit Charge 2 and the Fitbit Flex 2 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 2 and the Fitbit Flex 2 are both excellent products that will more than do their job!