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About this product
Product Identifiers
BrandFitbit
MPNFB401SL
GTIN0898628002656
UPC0898628002656
ModelFlex
eBay Product ID (ePID)1006183131
Product Key Features
Power SourceBatteries
SizeS, L
DepartmentUnisex Adults
Battery LifeUp to 5 Days
Sport/ActivityGym & Training, Yoga, Running & Jogging
ColorBlue
Indoor/OutdoorIndoor/Outdoor
For Operating SystemsWindows, iOS, Android
Measurement ProvidedDistance, Calories
Body AreaWrist
FeaturesWireless, Bluetooth, Wristband, Alarm, Pedometer, Calorie Monitor, Water Resistant, Sleep Tracker
MaterialPlastic
TypeActivity Tracker
Additional Product Features
Mobile AppYes
Ratings and reviews
Most relevant reviews
- 22 Sep, 2018Most favourable review
A simple goal: Count your steps
A simple fitness goal: Count 10,000 steps a day. This device shows progress with little LEDs and purrs when you get 10,000. Doesn't do much, doesn't cost much, and you can get wristbands in different sizes and colors.Verified purchase: YesCondition: Pre-owned
- 09 Feb, 2016Most critical review
Would think again before purchasing the Charge HR
I only use this product to keep track of steps and heart rate. I have found that this products add steps to the count while I am (have been) sitting taking no steps. I do find that when I use it to log one (1) specific activity it seems to work well. I don't know enough to comment on the heart rate. I am not sure if battery last 5 days as I charge when its low. I have been to Fitbit community blog and all the new people (like me ) seem to have the same issue of adding steps. i am not sure if its a software issue or Fitbit is even looking at this problem. i think I would find a different one if I was to get a new one.Verified purchase: YesCondition: New
- 26 Dec, 2017
Same old poorly designed wrist nand
I like everything about the Fitbit tracker except for the wristband. This is my third one and the band is still the same style with the hard to connect snaps at the end. Otherwise it's accurate it's small and it's economical. In our family Fitbit has see unreliable history as this is our third one in three years. It seems you may as well plan on buying a new one every year for Christmas because the first two couldn't last more than one year. The Fitbit app is poorly designed also hard to find features and poorly designed tiles with no descriptive titles. The app is badly in need of an update itself.Verified purchase: YesCondition: New
- 25 Jun, 2016
Fairly accurate, but not perfect.
I've tried a basic pedometer (which is largely what I use this fitbit for), a misfit shine, and this. It's way more accurate than the misfit and slightly off (by 100-200 steps) than my pedometer. The additional features, such as sleep tracking and counting stairs you've climbed, sold me on this product. It syncs wonderfully with Myfitnesspal, which is a MAJOR bonus for me.Verified purchase: YesCondition: Pre-owned
- 12 Apr, 2016
Fit Bit Flex
I LOVE my new Fit Bit Flex. My only complaint would be that it needs to be charged every other day. I was told it would only need to be charged about once a week. Otherwise, it's great. I've ordered several replacement bands to coordinate with my outfits. I love the way it tracks my sleep and my steps. It was well worth the money.Verified purchase: YesCondition: New
- 20 Jan, 2016
Obsessed!
I absolutely love my Charge HR. I'm a nurse so I've tested the accuracy of the heart rate monitor and it is almost always spot on, maybe 1 beat off. With continuous sync off, my battery usually lasts for about 3 days before it starts telling me the battery is low but charging takes less than 2 hours. Sometimes it mistakes certain activities as steps but you can adjust the settings so it is more sensitive. Buy this! You won't regret it!Verified purchase: YesCondition: New
- 24 Mar, 2017
The perfect fitbit
I've had much more expensive fitness trackers that track geolocation, heart rate, etc. However, this version of the fitbit flex is my favorite. Why? --so lightweight that you don't notice it on your wrist, unlike fancier trackers --water resistant enough that I don't have to remove to take a shower (but don't swim with it!) --chill enough that I can leave on while I sleep. --it tracks my sleep without me having to do anything at all. --holds a charge for like five or six days. --relatively unobtrusive in appearance. --cheap enough now on eBay that I can buy it and not really worry if it were to break or get lost. (i've lost two other fitbits so far that both clipped into my pocket; this is also why I like a wrist version better.) --the lack of a step count on the unit itself (it only gives you rough estimates with the dots) makes me slightly less manic about checking it, while still giving me the feedback I want. --of the various tracker companies, there are only two I'm fairly certain will stay in business, Garmin and Fitbit; so I feel like my data will probably live on and not be tied to a company that goes defunct. That's it. It's a good tracker. If you need heart rate monitoring, however, you will want a different product. Cheers!Verified purchase: YesCondition: New
- 13 Sep, 2016
had to send it back to Fitbit
Didn't work correctly. I could not get it to sync with my iphone. Tried everything. Called Fitbit. They couldn't get it to work either. This is the second fitbit I have had trouble with. The first one was refurbished by the factory, this one was new. Firbit nice about replacing it for me. We'll see when the third one arrives.Verified purchase: YesCondition: Pre-owned
- 18 Feb, 2016
Slightly Disapponted
I was really excited when I received my Fitbit. I have had it less than one month and already notice inconsistencies in the distance I walk and the steps I take. As well, my band already broke for the small size. While this produce is definitely as advertised and have no problems with whom I bought it from, the product itself is sub-par.Verified purchase: YesCondition: Pre-owned
- 07 Jul, 2019
Light weight with great features!
Love the Fitbit flex!Verified purchase: YesCondition: New
