Skip to content
Main Content
No content
  • Specifications
    Operating System Compatibility
    Apple iOS, Android
    App Compatible
    Metrics Measured
    Blood oxygen, Calories burned, Duration of exercise, Duration of sleep stages, Hours slept, Hydration, Respiration rate, Resting heart rate, Skin temperature
    Water Resistant
    Maximum Depth of Water Resistance
    32 feet
    Band Material
    Polymer, Elastane
No content
No content

WHOOP - 4.0 Health and Fitness Tracker with 12 Month Subscription - Onyx

Your price for this item is $215.10
The previous price was $239.00

4 payments starting at



Trade-In and Save

Save when you trade-in a similar device.

Check your trade-in value.

No content
No content
No content
geek squad logo

Protect your wearable product

Warranty Protection Plans
Accidental Geek Squad Replacement -
What's IncludedTerms & Conditions
No content


No content
No content

Have everything you need?

See other items that work well with this one.

  • Therabody - Theragun Relief - Navy
  • Plus
  • WHOOP - SuperKnit Accessory Band 4.0 - Heather


Rating 4.3 out of 5 stars with 182 reviews

Rating by feature

  • Rating 4.4 out of 5 stars

  • Rating 4.7 out of 5 stars

  • Rating 4.6 out of 5 stars

83%would recommend to a friend

Top Mentions filter

The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.

  • Rated 5 out of 5 stars

    Worth the investment!

    Fits great, easy to set up. The metrics and tracking are really great if you are into training and getting the most out of yourself athletically. The battery is easy to charge and charges rather quickly giving you 3-4 days without having to take it off. The app that receives the information is great for tracking and setting performance and fitness goals, including the sleep tracker which has a journal feature that helps determine patterns and ways to get more sleep / performance. I'm 53, and wish I had this when I was younger but better late than never. A few pics and a detail of the sleep metrics provided. 33 years in the fire service doesn't lend itself to solid sleep but at least I have answers and something to work on based on the info.

    Posted by MatthewT

  • Rated 5 out of 5 stars

    Great Device…

    I love this product. I work out at least 5 times a week, but I have issues with sleep and this device helps me a lot giving me feedback on how my sleep and recovery is on a daily basis. It has so many futures. Very good at keeping track of your strain at work outs and calories. The only down side is the battery. It does not last. I fully recommend it

    Posted by HectorC

  • Rated 4 out of 5 stars

    Works well and is comfortable

    So far so good. The whoop provides some insightful data. It is comfortable to wear to the point where I forget its on. Changing is innovative and you dont neeed to take it off to charge. I would rate 5 stars but cant seem to figure out how to set a target heartbeat range say for exercising/cardio. It would be awesome if you could set the range and get alerts when you go over or under target while running or on the treadmill

    Posted by OwenK

Similar products from outside of Best Buy