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Wear Ionic
Place Ionic around your wrist. The side of the watch marked with “fitbit” should be on
the bottom of your wrist. If you need to attach the small wristband instead of the
large one, or if you purchased an accessory wristband, you’ll find instructions on how
to change the wristband in Change the wristband.
Placement for all-day wear vs exercise
For all-day wear when you’re not exercising, Ionic should usually rest a finger’s width
below your wrist bone and lay flat, as you would normally wear a watch.
For optimized heart-rate tracking while exercising, keep these tips in mind:
• Try wearing Ionic higher on your wrist during exercise for an improved fit and
more accurate heart-rate reading. Many exercises such as bike riding or weight
lifting cause you to bend your wrist frequently, which could interfere with the
heart-rate signal if the watch is lower on your wrist.
• Make sure the watch is in contact with your skin.
• Don’t wear your watch too tight; a tight band restricts blood flow, potentially
affecting the heart-rate signal. However, the watch should be slightly tighter
(snug but not constricting) during exercise than during all-day wear.
• With high-intensity interval training or other activities where your wrist is
moving vigorously and non-rhythmically, the movement may limit the sensor’s
ability to provide a heart-rate reading. If your watch doesn’t show a heart-rate
