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Overview

The Fitbit Sense 2 Advanced Health and Fitness Smartwatch is a smartwatch built around all-day health and wellness tracking. It works with Android and iPhone.

  • 40+ sport modes cover a wide range of workouts and activities
  • Blood oxygen (SpO2) readings add a fuller view of your wellness trends
This description was generated by AI and reviewed for accuracy.
Open Box

Open Box - Fitbit Sense 2 Advanced Health and Fitness Smartwatch with Bluetooth Calling, Built-in GPS

Brand: Fitbit
Model: FB521
Web Code: 17811790
Sold and shipped by | 4.4 seller rating (484 reviews)

Sale ends: *

Available for deliveryAvailable online only

Delivery times vary by location. Most Marketplace items leave sellers' locations within 2 business days. Allow additional time for shipping.

Seller Return Policy

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Warranty

Check with the manufacturer for details.

For Quebec residents: See the Availability Guarantee disclosure in the Specifications section below.

This is an Open Box Product. It's been inspected and is fully functional. It includes all original accessories and a minimum 1-year warranty (unless noted otherwise below). For return details, see the Return Policy tab.

What you need to know

  • Tracks your health and wellness through the day and night
  • Works with Android and iPhone; a companion app is needed for some features
  • Follow heart rate, sleep, blood oxygen throughout the day
  • Built-in GPS maps your routes from the watch
Stay connected from your wrist

Message, call and app notifications from your phone appear on your wrist. Bluetooth calling lets you make and take calls through a paired phone.

Use smart tools on the go

Built-in Alexa handles hands-free requests. Contactless payments are supported from the watch where available.

Follow wellness insights

Heart rate monitoring gives visibility into your daily trends. Blood oxygen (SpO2) readings add another view of your wellness. On-device ECG readings are supported. Stress tracking helps you see how your day is affecting you. Cycle tracking is supported in the companion app. Health and wellness data is intended as an estimate of tracked metrics and is not intended for medical use.

Follow your sleep patterns

Sleep tracking gives you visibility into your rest from night to night.

Support workouts and training

40+ sport modes cover a range of activities and workouts.

Track routes with GPS

Built-in GPS tracks your routes and distance directly from the watch.

Compatible smartphone or companion app may be required for certain features.

This description was generated by AI and reviewed for accuracy.
Trade in

Trade in your smartwatch for a Best Buy gift card.*

For Quebec residents – Disclosure under the Consumer Protection Act

In compliance with Bill 29, Best Buy and third-party sellers on Best Buy Marketplace do not guarantee the availability of replacement parts, repair services, or maintenance information for any products. Coverage provided through any Best Buy Protection programs and applicable manufacturer warranties, if any, remain in place. Information about the manufacturer’s availability guarantee can be found .

Shipping Charges

Free standard shipping may be available on orders over a minimum amount (before taxes, fees, and promo codes). Shipping charges may vary based on item size and your shipping address. Want a shipping charge estimate? Simply add an item to your cart, then access the cart and enter your postal code in the shipping estimate section.

Processing Time

Most items ship within 2 business days after an order is placed*. Allow additional time for shipping to your address.
*Please note: If an item you ordered becomes unavailable, you'll be notified and a full refund will be processed within 2 business days.

Shipping Area Restrictions

Shipping is not available in the following areas*:
  • No restrictions in Canada
*Please note: Shipping area restrictions may vary for large items. If an item can't be shipped to your address, we'll let you know during the checkout process.
Product Category
Smartwatches
Return/Exchange Period
30 days
Condition
Opened

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