Fitbit FB503WTGY Ionic Fitness Watch, Blue Gray/Silver Gray

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FitbitSKU: FB503WTGY

Sale price$284.99 Regular price$359.99
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  • Condition: New
    This product is brand new with a full manufacturer warranty
  • Warranty: 90 Day Manufacturer Warranty


Fitbit FB503WTGY Ionic Fitness Watch, Blue Gray/Silver Gray


The Fitbit Ionic is a feature-packed wearable that provides fitness guidance, health insights, music storage, and much more. This sleek-looking timepiece comes with a 1.42" color touchscreen and features a blue gray band with a silver gray case. In terms of fitness tracking, the Ionic offers both multi-sport functionality and traditional all-day activity tracking. Complementing these modes are the Ionic's sophisticated array of sensors, which include an optical heart rate monitor, built-in GPS, 3-axis accelerometer, altimeter, and more-all working to provide you with the most accurate health data possible. Beyond its fitness functionality, the Ionic offers plenty of everyday features, including smartphone notifications and alerts, contactless payment option, sleep monitoring, and more. If you're a Pandora user, you can even store songs locally on the Ionic and listen to them with a compatible pair of Bluetooth headphones. The Ionic is designed to be both durable and water-resistant, so you can take it in the pool, the shower, or out in the rain. Its built-in battery provides up to 10 hours of tracking in GPS mode, meaning you'll be covered even during your longest workout sessions. Large and small interchangeable bands are included with your Ionic, as well as a charging cable.


  • 1.42" Color Touchscreen Display
  • Built-In GPS Sensor
  • PurePulse Heart Rate Data
  • Wi-Fi, Bluetooth, and NFC

    Dynamic Personal Coaching

    Get personal coaching straight from your wrist that includes on-screen guidance and routines that change and adapt based on your feedback.

    PurePulse Heart Rate

    The Ionic utilizes PurePulse technology to deliver continuous, automatic, wrist-based heart rate data.

    Built-In GPS

    Built-in GPS lets you see precise pace, distance, and other key stats, while recording elevation climbed, split times, and ever a map of your route.

    Store & Play Music

    Use Pandora with your Ionic to store and play songs on your watch.


    The Ionic features a water-resistant design, so you can safely wear it in the pool, shower, or rain.

    Multi-Day Battery

    Get up to 10 hours of battery in GPS mode, so you can track day to night on a single full charge.

    Multi-Sport Modes

    Track specific workouts in modes like running, cycling, or lifting weights and get real-time data feedback and post-workout summaries.

    All-Day Activity Tracking

    Monitor your steps, heart rate, distance, calories burned, floors climbed, active minutes, hourly activity, and stationary time.

    Smartphone Notifications

    With the Ionic you can see call, text, and calendar notifications on screen and also get push notifications from your favorite apps.


    Use the SmartTrack features to automatically record select exercises and send your data to the Fitbit app.


    Thanks to Ionic's integrated NFC chip, you can use your credit and debit cards anywhere that accepts contactless payments.

    Popular Apps

    Ionic supports all your favorite apps. Get instant access to important information like weather or sports, as well as many other popular applications.

    Syncs Wirelessly

    Thanks to built-in Bluetooth, the Ionic can sync stats wirelessly to any compatible computer or device.

    Sleep Stages & Insights

    See your time spent in light, deep, and REM sleep stages, and get personalized insights to help you improve.


    Watch Operating System Proprietary OS
    Compatible Operating System Android 4.4 and later
      iOS 5 and later
    Sensors Accelerometer, Altimeter, Gyroscope, Heart Rate, Light Sensor
    Activity Tracker Yes
    Microphone No
    Built-In Speaker No
    Vibration Yes
    Connectivity Bluetooth, Wi-Fi, NFC
    Wireless Range 30' / 9.1 m
    Bluetooth Protocol Bluetooth LE
    Bluetooth 4
    Wi-Fi Wi-Fi 4 (802.11n)
    GPS Yes
    Dial Shape Rectangle
    Dial Size 1.42" / 36.1 mm
    Dial Type Digital
    Display Technology LCD
    Display Resolution 3482 x 250
    Backlight No
    Battery Type Lithium-ion polymer
    Battery Life GPS: Up to 10 hours
      Normal Use: Up to 4 days
    Battery Charging Time 0 to 2 Hours
    Case Materials Aluminum
    Water Rating 5 ATM
    Band Material Flexible Elastomer
    Wrist Size Fits wrists 5.5 to 8.1" / 139.7 to 205.7 mm
    Case Dimensions 1.15 x 0.83 x 1.42" / 29.21 x 21.08 x 36.07 mm
    Packaging Info
    Package Weight 0.66 lb
    Box Dimensions (LxWxH) 8.7 x 4.05 x 1.85"

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