Shipping Info:


Item #: 331591689

Never stop moving with Fitbit Flex Wireless Activity + Sleep Fitness Tracker. Wear this slim, stylish device all the time and get the motivation you need to get out and be more active. It tracks steps, distance, and calories burned and shows you how you’re stacking up against your daily goals. At night, it tracks your sleep cycle, helps you learn how to sleep better, and wakes you silently in the morning. Access your stats anytime on your computer, tablet or from leading smartphones—both iPhone and Android. Flex is your perfect companion. It’s with you everywhere, even in the shower. Plus, it looks good no matter what you’re wearing.


  • Tracks steps, distance, calories burned and active minutes
  • Monitor how long and how well you sleep
  • Wakes you (not your partner) with a silent wake alarm
  • LED lights show how your day is stacking up against your goal
  • Easy-to-wear, slim, comfortable wristband
  • Syncs automatically with select mobile devices and to your computer
  • Set goals, view progress, and earn badges
  • Share and compete with friends throughout the day
  • Free iPhone and Android App
  • Accessory bands allow you to personalize your Flex
  • Water Resistant - Wear in the shower
  • Rechargeable Battery lasts 5-7 days


  • 2 Wrist bands included: Small - Fits wrists 14 cm - 16.5 cm in circumference / Large - Fits wrists 16.5 cm - 20.8 cm in circumference
  • 14 mm thick
  • Removable Fitbit Flex tracker
  • Comes with charging cable & wireless sync dongle
  • Battery life: lasts up to 5 days / Battery type: Lithium-polymer / Charge time: One to two hours
  • Memory: Tracks 7 days of detailed motion data – minute by minute / Tracks daily totals for past 30 days
  • Fitbit Flex syncs automatically and wirelessly to computers and 200+ leading iOS, Android and Windows devices using Bluetooth 4.0 wireless technology. Syncing range: 6.1 m
  • Operating temperature: -20° to 45° C
  • Maximum operating altitude: 9,144 m
  • Radio transceiver: Bluetooth 4.0
  • LED display with 5 white indicator lights
  • Sensors & Components: 3-Axis Accelerometer & Vibration motor