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Main Content
Fitbit Flex Black Activity Tracker - FB401BK
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Abt Model: FB401BK
UPC: 898628002649
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Fitbit Flex Black Activity Tracker, Model FB401BK
Features:
- Set a goal and go
Flex allows you to set a goal and uses LED lights to show how you're stacking up. Each light represents 20% of your goal. You choose which one — steps, calories, or distance. It lights up like a scoreboard, challenging you to be more active day after day. - Flex Tracks:
- Steps Taken
- Calories Burned
- Hours Slept
- Distance Traveled
- Active Minutes
- Quality of Sleep
- Powered by Fitbit's leading-edge accelerometer, Flex bases calculations like calories burned on your personal profile — reflecting your stats, not any average Joe's.
- Helps you get your ZZZs
Flex never sleeps, even when you do. Continue to wear it all night and it’ll measure your sleep quality. Your dashboard will reveal how long you slept and the number of times you woke up to help you learn how to sleep more soundly. Flex also has a silent wake alarm that gently vibrates to wake you at your desired time, without disturbing your partner. - Always by your side
Flex is your perfect companion. It fits comfortably around your wrist so you can wear it proudly all day and night. - Sync your stats. See your progress
Flex automatically syncs your data to PCs, Macs, iPhone 4S & 5, iPad 3, Retina & mini, iPod touch, and to select Android phones without plugging in or pushing buttons. This gives you real-time access to your stats on the Fitbit dashboard throughout the day. Also with select NFC-enabled Android devices, you can tap your device to launch your Fitbit stats. It's like magic. - Discover your trends
Flex comes with free online tools and a mobile app that allow you to set goals and follow your progress through awesome graphs and charts. Log food, workouts and much more and get the inside scoop on your health. Knowing how close you are to reaching your goals gives you the motivation to reach them and aim higher. - Badges galore
We’ll sing your praises and keep you motivated with Fitbit badges for daily, weekly, even lifetime achievements. Each time you achieve a new goal, or “wow” us with your performance, we’ll award you with a badge. But you’ll have to work for it. - Share and compete with friends
Challenge and compete with friends and family on Fitbit.com. In addition to rooting for one another, you can compare stats and see how your progress stacks up. - Flexibility to match your style
Flex tracker is flexible. You can take this tiny tracker out and put into any of Flex's colorful bands to fit your mood. Check out our accessory band colors and look good no matter what you're wearing. - Plays well with other apps
Weight trends can be influenced by a variety of fitness and nutrition factors. Fitbit works with several popular health apps that let you export your Fitbit data their way. Some, like Lose It!, also let you import their data into your Fitbit dashboard, so you can track your stats in either location. Learn more in our App Gallery.
Specifcations:
Controls & Display
- Flex uses five white LED indicator lights to show you how your day is stacking up against your goals. Each light represents 20% of your goal. Just tap the display twice to see your progress against your daily goal.
Wireless sync to PC & Mac
- Fitbit's trackers are the first all day activity trackers to offer Bluetooth 4.0 connectivity, so you see your stats in real-time. Syncing occurs automatically any time Flex is within about 20 feet of the wireless sync dongle and is relatively motionless. The dongle plugs into your Mac or PC's USB port. Syncing and uploading require use of the Fitbit Connect application
Wireless sync to mobile
- Syncing Flex to your smartphone or tablet requires Bluetooth 4.0 compatibility.
This is currently available on:- iPhone 4S, 5
- iPad 3, Retina
- iPad mini
- iPod touch, 5th generation
- Samsung Galaxy S4
- Samsung Galaxy S III
- Samsung Galaxy Note II
- Samsung Galaxy Note 10.1
Memory
- We recommend syncing your data regularly. As long as Flex has battery power, it tracks the most recent seven days of detailed, minute-by-minute data. It also tracks your daily total for the past 30 days and summarizes your daily calories, distance, and steps taken.
Batteries & Power
- Flex battery lasts approximately five days when fully charged. When charging your Flex the LED lights will indicate its level of charge. All 5 lights will light up when it's fully charged. You can also see your battery level on your Dashboard and mobile application. Remember to charge your Flex every 3 to 5 days to ensure you are always tracking.
- Battery Life: 5 days
- Battery Type: Lithium-polymer
- Radio Transceiver (For Wireless Sync): Bluetooth 4.0
Browsers supported
- PC Browsers:
- Chrome: 12 and up
- Firefox: 3.6.18 and up
- Internet Explorer: 8 and up
- Mac Browsers:
- Chrome: 12 and up
- Firefox: 3.6.18 and up
- Safari: 5.0.5 and up
Requirements
- Windows: XP/Vista/7/8
- Mac: OS X 10.5 and up
- USB port
- Internet connection
Sensors & Motors
- Flex uses a MEMS 3-axis accelerometer that measures your motion patterns to determine your calories burned, distance traveled, steps taken, and sleep quality. Flex also contains a vibration motor, which allows it to vibrate when alarms are set to go off.
Environmental Requirements
- Flex™ is water resistant. It should be able to brave all the elements of your everyday life - whether you're in the shower or out in the rain.
- Operating Temperature: -4° to 113° F (-20° to 45° C)
- Non-Operating Temperature: -22° to 140° F (-30° to 60° C)
- Water Resistant: Device is water resistant, and can be submerged up to 10 meters.
- Maximum Operating Altitude: 30,000 feet (9,144 m)
What's Included:
- Flex™ tracker
- Large & small wristbands
- Wireless sync dongle
- Charging cable
- Free Fitbit.com membership - includes ability to log and track activity, food, sleep, water, body mass, weight, and more
- Access to free mobile apps for iPhone and Android
Approixmate Dimensions:
- Small Wristband:
- 5.5-6.9"
- Large Wristband:
- 6.3-8.2"
- Width: .6"
Approximate Weight:
- Shipping: 1 lb
California customers:
General
Type
Activity Tracker
Water Resistant
Yes
Rechargeable Battery
Yes
Clock Display
No
Type
Fitness Tracker
Wristband
Yes
Wearable
Yes
Heart Rate Monitor
No
Digital Read Out
No
Battery Type
Lithium-ion polymer
User Replaceable Battery
No
Pedometer
Yes
Calorie Counter
Yes
Guides
Fitbit Comparison Chart
Key Features
- Tracks Steps Taken, Calories Burned, Hours Slept, Distance Traveled, Active Minutes, Quality Of Sleep
- Fits Comfortably Around Your Wrist
- Automatically Syncs Your Data
- Free Online Tools And A Mobile App
- Black Finish
Guides
Over 87 Years Of Experience
What Our Customers Say About Us
Item arrived on time, works great. Very pleased with the whole transaction.
Tim G.
- Mccleary, WA
May 15, 2023
The ABT Team, They came, delivered, setup & remove the old unit & box and were very Proffesional, Courteous & fast. I look forward to doing more business with ABT. Thank You...
Leo D.
- Chicago, IL
May 11, 2023
Easy to order. Support if you need it. Good communication on delivery.
Barbara B.
- Little Elm, TX
May 15, 2023
Answered my call promptly and helped with all my questions. Order was delivered on time and we are very happy with our new microwave. Definitely would order from ABT again!
Marcy M.
- Plymouth, MN
May 16, 2023
Delivery was on time and installation was very professional!
Jonthan A.
- Carmel, MI
May 15, 2023
Delivery was great. Communication was excellent and the driver called 10 minutes before arrival.
Sonia L.
- Chicago, IL
May 11, 2023
Free shipping, excellent delivery service, and the price on the product was very competitive. Sales rep was very helpful and pleasant to deal with. What more can you ask.
Lawrence G.
- Ellison Bay, WI
May 19, 2023
I've been a costumer since 1995, I've had no problems.
Ross P.
- River Grove, IL
May 19, 2023
The delivery of our new bed was flawless and accomplished with knowledge skill, dexterity, and efficiency. The delivery team was respectful, friendly, clean dressed, and mindful of all personal property in the house. BRAVO!
Kevin R.
- Chicago, IL
May 11, 2023
