WHOOP 4.0 Black Wearable Health and Fitness Tracker with Onyx SuperKnit Band for Performance Optimization
WHOOP 4.0 with 12 Month Subscription – Wearable Health, Fitness & Activity Tracker – Continuous Monitoring, Performance Optimization, Heart Rate Tracking – Improve Sleep, Strain, Recovery, Wellness
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WHOOP 4.0 with 12 Month Subscription – Wearable Health, Fitness & Activity Tracker – Continuous Monitoring, Performance Optimization, Heart Rate Tracking – Improve Sleep, Strain, Recovery, Wellness

1,256 ratings

Key item features

  • Complete Package: Includes an initial 12-month WHOOP membership, 4.0 hardware, Onyx SuperKnit band, and a wearable, waterproof battery pack.
  • FSA/HSA Eligible: This product is eligible for purchase using FSA/HSA cards, facilitating direct payment at checkout.
  • Continuous Monitoring: Offers ongoing tracking of physiological data such as heart rate, respiratory rate, skin temperature, and blood oxygen levels.
  • Personalized Guidance: Provides insight-driven recommendations and a science-backed approach to optimize health and performance based on logged behaviors.
  • On-the-Go Charging: Features a waterproof battery pack that allows for continuous data collection for days on a single charge while being worn.
  • Health Coaching: Functions as a wearable health and fitness coach, offering recommendations for sleep and exertion based on individual physiology.
Generated by AI

Specs

Features, WaterproofFitness goal, Health & WellnessProduct line, WHOOP 4.0Wireless, Bluetooth CompatibleActivity, TrainingBrand, WHOOP

About this item

Product details

WHOOP is a wearable health & fitness coach that keeps track of everything from your sleep patterns to your exercise habits to not just track what you did, but tells you what to do next. WHOOP coaches you through your day with recommendations based on your unique physiology, whether that’s recommending when to go to bed or how much exertion you should take on to meet your fitness goals. Purchase includes an initial 12 month WHOOP membership, 4.0 hardware, onyx SuperKnit band, and wearable + waterproof* battery pack. WHOOP also comes with 24/7 customer service and a warranty in order to make it a worry-free purchase. At the end of your 12 months, you can renew your membership via the WHOOP app.
    • EVERYTHING YOU NEED IS INCLUDED: Purchase includes an initial 12-month WHOOP membership, 4.0 hardware, Onyx SuperKnit band, and wearable, waterproof* battery pack. THIS IS FOR FIRST TIME WHOOP MEMBERS. 
      • FSA/HSA: WHOOP is FSA/HSA eligible! As a certified retailer, you can purchase your 12-month WHOOP membership and device directly with your FSA/HSA card at checkout. 
      • CONTINUOUS MONITORING: WHOOP is a unique wearable fitness device that offers continuous monitoring of physiological data, including heart rate, respiratory rate, resting heart rate, heart rate variability, skin temperature, blood oxygen levels, daily activity and sleep so users can better understand their overall health and wellness status and track their progress over time.
      • PERSONALIZED FOR YOUR GOALS: WHOOP is insight-driven, providing users with clear next steps and a science-backed approach so they can understand and improve their overall health and optimize performance. Track and log your daily behaviors like activity, diet, alcohol consumption, stress levels, caffeine intake and more with the WHOOP Journal. WHOOP then calculates which behaviors help or hurt your sleep and recovery most, making it easier to build healthy habits
      • ON THE GO CHARGING: Get continuous data for days on a single charge with our waterproof* battery pack that enables you to charge on the go while you wear it. 
      • SUPPORT: The Membership Services team is available 24/7 to help you with anything from charging issues to questions about your membership. If you experience any issues with your WHOOP, the team will work with you to resolve them or replace your device, hassle-free.
      info:
      We aim to show you accurate product information. Manufacturers, suppliers and others provide what you see here, and we have not verified it.  

      Specifications

      Features

      Waterproof

      Fitness goal

      Health & Wellness

      Product line

      WHOOP 4.0

      Wireless

      Bluetooth Compatible

      Warranty

      Warranty information

      Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.

      Customer ratings & reviews

      4.3 out of 5 stars
      stars
      1,256 ratings684 reviews
      Includes global ratings and reviews
      How item rating is calculated
      1. 5 stars69% (865)
      2. 4 stars12% (151)
      3. 3 stars6% (76)
      4. 2 stars4% (44)
      5. 1 star10% (120)

      Reviews summary

      Pros

      • : The tracker reports metrics for sleep and recovery.
      • : It provides extensive post-exercise data and metrics.
      • : The device provides metrics to plan recovery and training.
      • : Navigation and operation are simple and intuitive.

      Neutral

      • : The strap functions comfortably but may crack, fray or detach.
      Generated by AI
      Filtered and sorted results would be available on the new 'Customer ratings & reviews' page.
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      Showing 1-3 of 684 reviews

      Dec 7, 2025
      Reviewer name: Jackson R
      5 out of 5 stars
      5 out of 5 stars review

      Life-changing

      This watch has helped me lose so much weight and keep me accountable every day to some type of commitment whether it's the days that I commit to go hard or days on recovery, I can track everything and that really shows consistency and discipline. The new upgraded version keeps me from having to bring out my blood pressure cuff every day and also it's nice to see where I'm physically at with how much age I have compared to my real age due to how healthy my readings are.

      Review from WHOOP
      Helpful?28KA545PAKXZ1427836585
      Nov 8, 2025
      Reviewer name: Jeremy M
      5 out of 5 stars
      5 out of 5 stars review

      Innovative and Data Driven

      I love being a supporter and user for Whoop as I get to see the data that helps me get better through physical and mental exercise, as well as working to get better sleep and overall recovery. The advances in the last year and a half of using it have been great and looking forward to more that will be offered!

      Review from WHOOP
      Helpful?28KA545PAKXZ1427836585
      Aug 22, 2025
      Reviewer name: Lori V
      5 out of 5 stars
      5 out of 5 stars review

      So happy I got my WHOOP!

      I've had various fitness trackers in the past, but was intrigued by the tracker which my boss wore. So I asked him about it, did my research, and ordered a WHOOP right away. I love all the various information it gives me about my current health, as well as suggestions/ways to improve it. I'm learning valuable things about my body, how it works and how to keep it healthy. Love the AI coaching, as well, and can't say enough good things about my entire experience with my WHOOP!

      Review from WHOOP
      Helpful?28KA545PAKXZ1427836585
      Current price is $199.99
      Price when purchased online
      • Free shipping
      • Free Holiday returns until Jan 31
      Walmart Accident Plan by Allstate

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      Arrives by Mon, Nov 2
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      Sold and shipped by Lagselectronics LLC
      3.75 out of 5 stars
      3.8 stars out of 5, based on 36 seller reviews(3.8)
      Extended holiday returns
      Free Holiday returns until Jan 31
      Benefits eligible (FSA/HSA)