Tracking of SpO2, temperature, and other metrics are included in WHOOP 4.0.

WHOOP has introduced its activity and health monitoring sensor, version 4.0, which was recently unveiled. It comes with improved technology, the ability to detect temperature and SpO2 levels, a more compact design, a variety of different ways to wear it, and other features.

Over the last several weeks, the firm has received a significant amount of coverage in the media. After receiving an infusion of funds totaling $200 million, WHOOP completed the purchase of PUSH, a sports technology business located in Toronto. In the past, we put the PUSH band through our paces. This is a wearable device that, when used in conjunction with the method known as Velocity Based Training, keeps track of the number of lifts, repetitions, and sets that you do at the gym.

That technology is not going to be included in WHOOP 4, as far as we can tell. Despite this, it might become available as an update in the following months. However, there are many more improvements that have been made.

What’s new about WHOOP version 4.0?

Design upgrades

The recovery and activity tracking band includes advancements in a variety of facets of the wearable’s functionality. To begin, the gadget is one-third less in size than the WHOOP 3.0 that was introduced in 2019, when it first came out. However, this is not the end of the modifications to the overall design.

You can still use the sensor while it’s tucked away within the wristband, so don’t worry about that. However, in addition to that, WHOOP 4.0 makes use of a technology known as Any-Wear. This allows for automated detection of the location on the body where the sensor is being worn.

You may wear WHOOP 4.0 on many parts of your body, including your chest, waist, and legs, if you buy the appropriate clothing. Simply slipping the sensor pod into one of the little pockets that have been sewn into clothes like the following:

Leggings, shorts, bralettes, daily boxers, and sporty boxers, along with sports bras, compression shirts, and leggings.

It goes without saying that the amount of data that can be obtained from some of these sites will be relatively restricted. For the purpose of calculating your heart rate, for instance, the sensor should be worn on the wrist. Only then will it be accurate.

Onboard the little pod, there is still no display of any kind. To access information and analysis, you will need to visit the dashboard on either the mobile app or the website.

The WHOOP statistics continue to provide valuable information into the recovery process. The vast majority of platform customers have shown an interest in this particular facet of the service. Choose one of the several activity bands or smartwatches available on the market today if you want to monitor the basics of your activity, such as the number of steps you take, the number of calories you burn, and the amount of sleep you get. These are the most cost-efficient alternatives for gathering information of that kind.

Better precision and an increased number of sensors may be found behind the hood.

A more advanced collection of sensors may be found within the item. The heart rate accuracy of WHOOP 3.0 has received a lot of attention (or rather inaccuracy). There are now a total of 5 LEDs and 4 photodiodes included into the sensor arrangement. Four of the LEDs have a green light, one has a red light, and one emits an infrared light. The generation before this one also featured four photodiodes, but there were only two green LEDs in it. It is my hope that this will result in improved monitoring of the heart rate. Reviews from actual customers are the only way to find out.

In addition to that, WHOOP has installed a sensor that can detect blood oxygen levels as well as the temperature of the skin. There is nothing really innovative about this. We’ve seen SpO2 in a wide variety of wearables, and Fitbit includes a skin variation sensor on a number of its smartwatches and fitness bands.

These two measures, together with real-time heart rate, resting heart rate, heart rate variability, and respiratory rate, will be monitored by the WHOOP Health Monitor, which will be included into the app in the near future. Additionally, you have the option to export trends for 1 month or for 6 months as a PDF report from this page.


Another one of the brand new features is called Sleep Coach. It comes with haptic alerts that may be programmed to wake you up in a lighter stage of sleep. You can even configure it to wake you up at a certain time. This takes into consideration the amount of sleep you need as well.

In terms of the duration of the battery life, you may anticipate getting around 5 days between charges. Which is fairly good taking into account the specifications and the frequency at which they were taken. However, this is now the standard for charging while on the go in all types of circumstances. The battery pack is water-resistant, and a double touch on it displays the current battery level. As in the past, you first need to charge the battery pack before you can attach it to the pod. The sensor is then charged by the battery pack.

Release date, price, availability

You will need to pay $30 per month in order to maintain your WHOOP 4.0 membership. In the event that an existing member has more than six months remaining on their subscription, they will be eligible to get the new tracker at no additional cost. The 27th of September marks the beginning of availability. Individually, the high-tech clothing may be bought, and their prices range anywhere from $54 to $109.

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