Specifications

• Sensors
  The Fitbit Ultra uses a MEMS 3-axis accelerometer that measures your motion patterns to tell you your calories burned, steps taken, distance traveled, and sleep quality. A built-in MEMS altimeter measures your vertical climb up stairs and hills.
  • Accelerometer
  • Altimeter
  
  
  
• Colors
  Fitbit Ultra comes in two color options:
  • Blue
  • Plum
  The OLED display is blue on both models.
  
  
  
• Size and weight
  Height: 2.125 inches (5.5 cm)
  Width: 0.75 inch (19.5 mm)
  Depth: 0.5625 inch (14mm)
  Weight: 0.4 oz (0.025 lb, 11.34 grams)
  
  
  
• Controls and display
  
  • Single-button control
  • Each press of the button cycles the display through one of 6 modes:
    
    • Steps
    • Distance
    • Floors Climbed
    • Calories Burned
    • Flower (overall recent activity level)
    • Clock
  • You can also personalize your display with:
    
    • Greeting/Name
    • Chatter (encouragements)
  1" x .25" blue organic light-emitting diode (OLED) display
  
  
  
• Wireless sync
  The Fitbit Tracker syncs wirelessly to the base station (included in package) using an ultra-low power 2.4 GHz ANT radio transceiver.
  

  Sync occurs automatically, anytime your Tracker is within about 15 feet of any base station and relatively motionless. The base station plugs into your Mac or PC’s USB port.

  Syncing and uploading requires use of the Fitbit uploader application.

  
  
  

• Memory
  While it is recommended that you sync your data regularly, the Tracker can store up to seven days of detailed, minute-by-minute data, as long as it has minimum battery power. It will also store daily totals (calories, distance, and steps) for the trailing 30 days, but without minute-by-minute stats.
  
  
  
• Battery and power
  The battery will last a minimum of 3 days between charges. The typical user’s experience is 5-7 day.
  

  To check the battery level, place the Tracker on the base station and press the button. You can also see your battery level on your personal dashboard at Fitbit.com, based on the last time you synced wirelessly.

  To charge the battery, just put it on the base station. It takes about an hour to fully recharge from a low indicator.

  Battery life 5–7 days
  Battery type Lithium-ion polymer
  Radio transceiver (for wireless sync) 2.4 GHz

  
  
• Environmental requirements
  The Fitbit Tracker is not waterproof. It should not be worn while swimming. When taking part in activities that might produce a large amount of sweat, the Tracker should be protected from exposure to moisture.
  

  Operating temperature 32° to 104° F (0° to 40° C)
  Nonoperating temperature -0° to 130° F(-17.7° to 54.4° C)
  Relative humidity Up to 85% noncondensing
  Maximum operating altitude 30,000 feet (9,144 m)

  
  
• What's included
  
  • 1 Fitbit Tracker
  • 1 base station / charger
  • 1 sleep wrist band
  • 1 belt holster
  • Free membership to Fitbit.com, which includes ability to log and chart activities, food, sleep, water, body mass, weight, and much more.