- Track steps, distance, calories burned & active minutes
- See LEDs light up as you progress toward your daily goal
- Sync stats wirelessly & automatically to leading smartphones & computters
- Style the slim, removable tracker your way with Flex accessories from Fitbit and Tory Burch
- Water-resistant wristband with a 5-day battery life
- Monitor your sleep automatically & set a silent alarm
Set a goal and go.
Stay focused on your goals and get motivated to be more active with Flex-a slim, stylish device that tracks all-day activity like steps taken, distance traveled, calories burned and active minutes.
See your day in a whole new light.
Flex lets you see how every day is stacking up with LEDs that light up like a scoreboard as you get 20% closer to completing your step, calorie or distance goal.
Step. Sleep. Wake. Repeat.
Fitbit Flex automatically tracks how long and how well you sleep-no tapping necessary-so you can monitor your sleep trends without interrupting your nighttime routine. It also includes a silent, vibrating alarm to make your wake-up call more peaceful.
Wear Flex your way, every day.
Style your Flex tracker with bright accessory bands, or turn it into a fashion piece with our exclusive Flex collection from Tory Burch. To change bands, simply pop the slim Flex tracker out of your wristband and slip it into the accessory that fits your personality.
All your stats, always in sync.
Flex syncs your daily stats to your computer and over 150 leading smartphones, and shows your progress in easy-to-read charts and graphs, to give you the push you need to keep moving toward your goals.
With you all the time.
Flex fits comfortably around your wrist, is water-resistant, and has a 5-day battery life*, so you can wear it day to night. And with a variety of available accessory bands, you’ll find the right Flex for every occasion.
- Transceiver Interface Type: Bluetooth 4.0 (for wireless syncing)
- Syncing Distance: Up to 20.0' (6.1 m)
- Water Resistance: Yes, can be submerged up to 32.8' (10.0 m)
- LEDs: 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
- Sensor: MEMS 3-axis accelerometer measures your motion patterns to determine your calories burned, distance traveled, steps taken, and sleep quality. Its altimeter measures stairs climbed
- Motor: Cylindrical vibration motor allows it to vibrate when alarms are set to go off
- Memory: Fitbit recommends syncing your data regularly. As long as Flex has battery power, it tracks the most recent seven days of minute-by-minute data. It also tracks your daily total for the past 30 days and summarizes your daily calories, distance, and steps taken
- Battery Type: Lithium-polymer
- Battery Life: 5 days
- LED Indicators: When charging your Flex the LED lights will indicate its level of charge. All 5 lights will light up when it's fully charged
- Operating Temperature: -4 to 113° F (-20 to 45° C)
- Storage Temperature: -22 to 140° F (-30 to 60° C)
- Altitude: 30,000' (9,144 m) (maximum operating altitude)
- System Requirements: Operating Systems:
- Windows XP/Vista/7/8, USB port, Internet connection
- Mac OS X 10.5 and up, USB port, Internet connection
- Supported browsers:
- PC: Chrome 12 and up, Firefox 3.6.18 and up, Internet Explorer 8 and up
- Mac: Chrome 12 and up, Firefox 3.6.18 and up, Safari 5.0.5 and up
- Dimensions: Small: 5.5 - 6.9" (140 - 176 mm)
- Large: 6.3 - 8.2" (161 - 209 mm)
- Width: 0.6" (15.2 mm)
- Removable Fitbit Flex™ tracker
- 2 wristbands (small and large)
- Charging cable
- Wireless sync dongle