Find Your Model Number in the Fitbit App

The fastest way to identify your Fitbit is to open the Fitbit app on your phone, tap your profile icon in the top left corner, and select your device name. The model number appears on that screen — it will say something like "Fitbit Charge 6" or "Fitbit Inspire 3". Write down the exact name you see there, because that is your model.

If you no longer have the Fitbit app installed or cannot access your account, you can still identify your device by looking at the physical tracker itself. The method depends on which generation you own, but the information is always printed or engraved somewhere on the band or case.

Key Takeaways

  • Your Fitbit app profile page displays your exact model name and number in one place.
  • If you cannot use the app, look for model information printed on the back of the band, inside the clasp, or on the underside of the watch face.
  • Fitbit model names include the product line (Charge, Inspire, Sense, Versa) and a generation number (3, 4, 5, 6).
  • Knowing your exact model matters when you need replacement bands, troubleshooting steps, or warranty information.

Check the Back of the Band or Clasp

Most Fitbit trackers have model information printed or stamped on the back of the wristband or inside the metal clasp. Remove your Fitbit from your wrist and look at the underside of the band where it touches your skin. You may see text that reads "Fitbit" followed by the model name — for example, "Fitbit Charge 5" or "Fitbit Inspire 2".

On some models, the text is small and faint. If you cannot read it clearly, try holding the band under bright light or using your phone's flashlight. If the band is worn or the text has faded, move on to the next method.

Look at the Watch Face or Device Back

If your Fitbit is a smartwatch style (like the Versa or Sense line), flip it over and examine the back of the watch case. You will usually find model information engraved or printed there. The text might say "Fitbit Versa 4" or "Fitbit Sense 2" along with other details like the serial number or regulatory markings.

For smaller trackers like the Inspire or Ace, the back of the device itself may have a label. Look at the side or bottom edge where the charging contacts are located — sometimes the model name is printed near the charging port.

Search by Physical Description if Text Is Worn Away

If the printed text has worn off or is unreadable, you can narrow down your model by describing what you see. Note the shape (rectangular clip, wristband with watch face, or slim band), the screen type (no screen, small black-and-white display, or color touchscreen), and any distinctive features like a built-in GPS or speaker.

Visit the official Fitbit website and browse their product lineup. Compare your device to the photos of current and past models. The shape and screen style usually make it clear which product line you own. Once you know whether you have a Charge, Inspire, Versa, or Sense, you can often determine the generation by the design details — for example, Charge 6 has a larger rectangular screen than Charge 5.

Use the Original Box or Documentation

If you still have the box your Fitbit came in, the model name is printed on the front and back. The retail packaging always displays the product name prominently. You may also find a quick-start guide or warranty card inside the box with the model number listed.

Check any paperwork that came with your device — receipts, warranty cards, or instruction manuals. The model name will be stated clearly on these documents. If you bought your Fitbit from a retailer, you can also contact them with your receipt or order number, and they can tell you which model you purchased.

Contact Fitbit Support if You Still Cannot Identify It

If none of the above methods work, you can reach Fitbit's support team through their website. Have your device with you and be ready to describe its appearance — the shape, screen type, color, and any features you notice. You can also provide your serial number if you can find it printed on the device or in the app.

Fitbit support can confirm your model based on the serial number alone, which is the most reliable method if your device is very old or heavily worn. Response times vary, but you should expect to hear back within a few business days.

Why Knowing Your Model Matters

Your exact model number determines which replacement bands fit your device, which troubleshooting steps explore to your situation, and whether your tracker is still under warranty. Different Fitbit models have different features, battery life, and software requirements — knowing your model helps you understand what your device can and cannot do.

If your Fitbit is not working correctly, customer support will ask for your model number before they can help you. If you want to buy a replacement band or accessory, you need to know your model to order the right size and style. Spending two minutes to identify your device now saves time later.

Frequently Asked Questions

What is the difference between Fitbit model names like Charge 5 and Charge 6?

The number indicates the generation — Charge 6 is newer than Charge 5 and has different features, a different screen size, and different compatible bands. Each generation is a separate product with its own specifications and support documentation.

Can I use a band from a Charge 5 on a Charge 6?

No. Fitbit bands are model-specific, and a Charge 5 band will not fit a Charge 6. Always check that a replacement band is listed as compatible with your exact model before you buy it.

Where is the serial number on my Fitbit?

The serial number is usually printed on the back of the device or inside the clasp, often below or next to the model name. You can also find it in the Fitbit app under your device settings. The serial number is different from the model name and is unique to your individual tracker.

What if my Fitbit is very old and the model name is no longer listed on the Fitbit website?

Older Fitbit models are no longer sold, but Fitbit support can still identify your device by serial number and may be able to help with basic troubleshooting. However, replacement bands and software updates may no longer be available for very old models.

Does my model number tell me if my Fitbit is waterproof?

Not directly from the name alone, but each model has a water-resistance rating that you can find in the product specifications. Look up your model name on the Fitbit website or in the user manual to see the water-resistance details — some are splash-resistant, others are water-resistant up to a certain depth.