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Fitbit

Fitbit Charge 4 Black Advanced Fitness Tracker

Based on 5,129 reviews
Condition: New
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$188.99

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Availability: Only 1 left in stock, order soon!
Fulfilled by iTech365 (We Record Serial Numbers)
Arrives Nov 11 – Nov 13
Order within 1 hour and 31 minutes

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At a glance

Condition
New
Size
1.65 in x 4.06 in x 8.86 in
Color
Black
Model
FB417BKBK
Storage
6400 MB
Screen size
1.5 in
Weight
0.03 kg
Works with
Smartphone

Features 4

  • Measures Calories Burned And Heart Rate
  • Comprehensive Monitoring
  • Sleep Tracking
  • Built-in GPS

Description

Fitbit Charge 4 Fitness TrackerWith Fitbit Charge 4, there’s no limit to how far you can go. This sleek, swimproof tracker is packed with features that help you know your workouts and your body better—like built-in GPS, Active Zone Minutes, a new exercise mode and sleep tracking. Plus, with Fitbit Pay and up to 7-day battery, you get more convenience on the go and more inspiration to reach your fitness goals.Water resistant to 50M.​ ​Battery life varies with use and other factors;​ up to 5 hours with continuous GPS.Product Features:24/7 HEART RATE - Use 24/7 heart rate to better track calorie burn, optimize workouts and uncover health trends that inspire you to make moves on your health and fitness goals.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 health and fitness progress.HEART RATE ZONES - Now heart rate zones are personalized based on your age and resting heart rate, so when you’re exercising you get a more accurate understanding of how hard your body’s working.WORKOUT INTENSITY MAP - IN APP ONLY - After outdoor exercise, check your workout intensity map in the Fitbit app to see your heart rate zones throughout your route and learn where you put in the most effort.ACTIVE ZONE MINUTES - With new Active Zone Minutes, your tracker buzzes when you reach your target heart rate zones during exercise, and celebrates when you earn extra minutes outside of exercise.

Specs 45

Operating System Android
Memory Storage Capacity 6400 MB
Special Feature Heart Rate Monitor, Sleep Monitor, GPS, Calorie Tracker, Daily Workout Memory
Connectivity Technology Bluetooth, NFC
Wireless Communication Standard Bluetooth
Battery Cell Composition Lithium Ion
GPS Built-in GPS
Shape Rectangular

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Nov 11 – Nov 13

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

5* for the device. 0* for Google. Not for instantaneous data.
Size: 1.65 in x 4.06 in x 8.86 in Color: Black Band Color: black
I had a charge HR fitbit from 2016 until 2022, which worked perfectly. After a few years the band (not replaceable) came off, and I re-glued it, device still worked perfectly. In 2022 I decided to upgrade to the Charge 4 due to SpO2, sleep stage, etc. monitoring. The Charge 4 has worked perfectly since then. My only complaint is the band, which is stiff and not too comfortable (I wear it 24/7/365). That was solved by use of a fabric velcro wrap band (AVOD, reviewed elsewhere). Since I got that band I absolutely love the Charge 4. I bought more as backups, but they haven't been needed. Gave one to my wife, who likewise likes it. There are some caveats about accuracy, which I'll discuss in a minute, but I find them not to be an issue as long as you're aware of them. My issue is Google, which bought Fitbit. Before that, everything worked like clockwork. Give username, password, log into Fitbit, use app, stay logged in for months, easy-peasy. But for a couple of months Google is telling me that as of 2/2/2026 I can no longer use the app unless I switch the account to Google. No more email login. OK, pain in the butt, but OK. EXCEPT: The link Google gives DOES NOT WORK. It tells me my email is "already in use for a different device" so I can't move it. [the Charge, maybe? Who knows. They give zero details, and zero ways to remediate.] They also won't let me move it to a new email. Zero stars for the Google experience is too generous. My "backup plan" is to use one of the brand new Charge 4s and try to set it up on Google when they shut off "my" three year old one. Based on the experience so far, I give that about a 5% chance of working, but if it does, I'll try to update the review. [Or if a miracle happens and I can get the current one switched to Google.] So: Charge 4, top notch except limitations below. Google: For such an advanced outfit with so many brilliant people and such great AI and search, their customer interface on this SUCKS. Accuracy limitations/caveats on Charge 4. Basically, I have found it to be extremely accurate, but there are limitations. When you first stand up and walk, it misses the first few steps...several more than the Charge missed. Not really an issue. I might miss 50 steps a day that way. If your only "walking" is moving from a couch to an electric wheelchair, you might lose a good fraction of your few steps. If you take walks, it is with 1% of GPS distance. And the step count is extremely accurate. If I manually count steps walking around the house, it's within 1 or 2% of the manual count. A+ on that. [Likewise, if I run on a treadmill, it agrees with the treadmill within 1-2%] It does NOT, in general, for me, respond to wrist motions as "steps" although you can learn to move your wrist in such a way as to make it sometimes count a "step". I find that a non-issue. If I get a dozen fake steps a day from wrist motion, it balances the steps I miss when first standing up/walking. A+ overall on distance, steps. Pu;se rate: There is an issue with pulse rate. The issue is that when it changes dramatically (say from walking to running) the pulse registered is inaccurate. If I go from walking around the house to running up and down stairs, for example, the Charge 4 will tend to read about 20 beats/min high. It will record random spikes of 50 beats too high, so the "max" pulse during exercise needs to be taken with a grain of salt (pulse rate based on comparison to pulse oximeter or ECG heart rate monitor). But, if I sit in a chair, or walk at a steady pace, the fitbit, pulse oximeter, and the ECG all agree (again, 1-2%). I sleep with a pulse oximeter every night, the Charge 4 is within one or two beats of the pulse/ox every night. It averages a fraction of a beat different. A+ for accuracy on pulse WHEN you are in a steady state condition, particularly resting. So: Don't trust the instantaneous pulse readout IF you have just changed level of exertion. Don't trust the spikes. Otherwise, pretty good. Calories: Fitbit Calories are based on pulse rate, so the errors in pulse rate tend to overstate calories burned. I keep a record of calories based on distance walked, run, basal metabolism, etc. and the Charge 4 tends to overstate daily calorie burn by 20% or so, for me. You could determine how much it is for you, and if you like, adjust the number. For a given exercise session, the numbers are roughly credible say 10-15% of independent measurement, sometimes right on the independent measurement. That's all close enough for me. YMMV. Sleep: I had a professional sleep study under medical supervision. I wore my pulse/ox and the Charge 4 at the same time. As mentioned, the Charge 4 agrees with my pulse ox for pulse rate overnight, and is pretty close (tends to be 1-2% low) on SpO2. My pulse/ox (Sleepu) and Charge 4 likewise agreed with average pulse and SpO2 from the professional study (2% ish difference). Remarkably, I thought, the SLEEP STAGE durations reported by the Charge 4 were close (to my mind) to the professional device, which has far more input data. The Charge 4 underestimated Deep Sleep by 25% or so, but showed each stage at the time the professional unit showed it. I considered that to be pretty amazing. Overall: Fabulous for a cheap device with such limited input. Will be sorry to lose it to Google's messing about. ... show more
Reviewed in the United States on January 2, 2026 by S-F TV addict
Plastic pegs snap off, Band doesn’t stay on after awhile
Size: 1.65 in x 4.06 in x 8.86 in Color: Black Band Color: black
I love Fitbits- have had two now and like the functionality of the app. I didn’t use mine for texting but was happy with the heart rate monitoring and step counting. However, after about 8 months, the plastic pegs that hold the bands on snapped off. This is the second time it has happened. First time, I bought the Fitbit at Costco and they gave me a full refund. I decided to take a leap of faith and order the same one here on Amazon (Costco was out of this version) and I liked how slender it was. Figured it was a fluke the first time, but it happened again. I contacted Fitbit customer service through the Fitbit app, and they replaced the part with a new watch face in a matter of a couple of days. I’m so happy with the quality and speed of the service and the watch face seems improved to the last one. Happy to still use my Fitbit! ... show more
Reviewed in the United States on April 19, 2022 by Stephanie Becher
Defective item
Size: 1.65 in x 4.06 in x 8.86 in Color: Black Band Color: black
I have had a fitbit Charge 4 for years. I liked the simplicity and ease of use, as well as the 7 day battery life. So, I took a chance and ordered a new Charge 4 even though it is several model years old. Big mistake! Initially, the new charge 4 synched to the Fitbit App and everything was fine. But then, after a week, it would lock up and never finish synching. I restarted the app, re-paired the device and finally did a hard reboot while charging. It worked again for 2 days, then suddenly stopped recording my steps. I did another hard reboot and it worked for 1.5 days. Then, it stopped recording steps again and the heart monitor stopped working. And then many other things started displaying bad information. At that point, I gave up and returned the defective device. I'll be moving to an Apple Watch SE. So sad as I loved my Charge 4 and really hoped it was a device that I could keep using for the future. ... show more
Reviewed in the United States on January 28, 2025 by Lea Ann Patrick
So much better than my iWatch 3 for what matters most
I have used an iWatch for several years and been very happy with it. My wife is more comfortable with a Fitbit. We bought a Charge 4 for her. I wanted to wear the tracker so I could answer her questions. I was so impressed I made the switch. I really like tracking my calorie consumption with the mobile app. I like the way it calculates calories burned and compares that with my calorie intake. I really like the way the mobile app scans bar codes to record my calorie intake. Almost every item allows you to record consumption using multiple measurements. If a recipe calls for a cup of an ingredient, I can use a scale to measure the amount in grams. I can also eat less than the "serving" size without making calculations. Reduces the guess work and allows multiple ingredients to be added to a single dish using the scale tare weight function before you add the next ingredient. Fast and easy. I do wish the app would keep the calories calculated for one measurement type when I change from, say, ounces to grams. It would also be nice if it converted the units of ounces to the corresponding units of grams. It's easy enough to do manually but changing 200 grams to ounces takes a lot of scrolling. The collection of watch faces is really good. Some list the most important fitness metrics on the watch face. Tapping the watch faces allows you scroll through the rest. Spotify integration is very good but I have not figured out how to change volume level with the tracker. Email, text and phone notifications allow access to text or email from the tracker. Phone control is reliable and easy to use. I have purchased the premium option. Not sure if I can recommend it. I can't tell what features are specific to the option. I do know the meal videos are worthless. There is no way to get a list of the ingredients and corresponding quantities. This issue has been raised at least as far back as 2021 and Fitbit has done nothing to address this obvious glaring hole in the meal video process. It would seem that adding the ingredients at the end of the video would be easy enough. Obviously, having the ingredients as part of the description (ala YouTube) would be best. There is probably more I could share but time for reviews is not endless. I highly recommend the Charge 4. Cost around $120 is well worth it There is a comprehensive list of foods that I can search along with frequent and recent foods I have eaten. There is an ability to create foods that are not in the list. But the ability to create custom meals is great!!! We make almost all of meals from a collection of recipes provided by our weight loss program. Makes it quick an easy to enter those meals quickly in the futures. The sleep function seems reasonable accurate but it does not consistently measure my sleep when I get up for a while in the middle of the night. ... show more
Reviewed in the United States on August 18, 2022 by pauruscra
Not as durable as I’d like
Size: 1.65 in x 4.06 in x 8.86 in Color: Black Band Color: black
This is my third. I like how they work but the part that inserts into the band has cracked off twice and so I either have to buy a new one or stick it in my pocket or bra
Reviewed in the United States on June 17, 2023 by P Knight
this one worked
Size: 1.65 in x 4.06 in x 8.86 in Color: Black Band Color: black
The version 4 of the fitbit is hard to find. I ordered one but it arrived with a dead display. But the vendor replaced it quickly. The replacement works perfectly. This was a replacement for a version 4 that had been in use for a few years before it died and I didn't want to move to a newer version.
Reviewed in the United States on December 28, 2025 by Hickabilly
The watch is perfect!
Size: 1.65 in x 4.06 in x 8.86 in Color: Black Band Color: black
Why is everyone complaining about the band? I have had this watch for 4+ years and I have collected ( bought) over 25 bands all different colors and textures. It’s like wearing a new watch everyday! 🩷💚❤️🩵💙🧡💛💜🤎🤍🩶🖤
Reviewed in the United States on March 10, 2026 by Kathy Havel
You're Going to Get Maybe a Year Out of It
Size: 1.65 in x 4.06 in x 8.86 in Color: Black Band Color: black
This is my 3rd (and last) Fitbit Charge 4. Purchased the first in a store and it gave up after about a year-battery wouldn't charge and it just quit. 2nd one-same thing: Lasted until just after the warranty period and then quit. This one that I purchased from Amazon has lasted me(wait for it) all of 10 months and sure enough the battery is dying. I've turned the GPS to the recommended setting (which I've never changed since I bought it and yet some how it's now on 'Dyanmic') and reset the thing twice and no luck. Still won't hold a charge for more than 3 hours. Got hold of Fitibit support and of course had to go through all the things I'd already done to have them say, 'Gee, we'll submit a warranty ticket.' The best they could do last time was give me a discount on a new tracker. Honestly, I like the Charge 4 and the app. They sync well and they track all the information I want to track. But the Charge 4 as a product seems to have a planned obsolescence that stretches to just after the warranty period and then you're just out of luck. I quit Garmin because I wasn't going to pay $89 to replace the band on a $100 tracker and Fitibit bands are super easy to replace. I guess I'll look around beyond Fitbit. ... show more
Reviewed in the United States on June 15, 2023 by John Roby
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