Both the WHOOP 3.0 and 4.0 provide members with innovative data to help users unlock human performance. So why upgrade to 4.0? Below is an overview of the key features, broken down into three categories: Hardware, Software, and Any-Wear

 

Hardware

Battery Life and Size

The WHOOP 4.0 is 33% smaller than the 3.0. Even with the decrease in size, the 4.0 still has the same 5-day battery life as the 3.0.

Enhanced Sensor Configuration

The 4.0 sensor has 5 LEDs (that use 3 different wavelengths of light) and 4 photodiodes for new metrics and increased accuracy.

Haptic Feedback

4.0 includes a spinning motor that creates vibrations to provide haptic alerts and take our Sleep Coach to the next level.

Pool. Shower. Beach.

The 4.0 sensor is IP68 dustproof and water-resistant up to 10 meters in depth for 2 hours - so you can continue to capture your data with zero interruptions.

Smarter Battery Pack

Also smaller than its predecessor, the 4.0 battery pack charges via USB-C and eliminates the worry of mistakenly taking your wireless charger in the shower, as it's IP68 dustproof and water-resistant up to 1 meter in depth for 2 hours.

 

Software

Pulse Oximeter and Blood Oxygen Levels

With its new LED configuration, the WHOOP 4.0 now has the ability to monitor blood oxygen levels (SpO2) with pulse oximetry.

Skin Temperature

4.0 is equipped with a skin temperature sensor to provide you with another layer of knowledge regarding your body’s readiness to perform.

Health Monitor

Along with the two new metrics listed above (SpO2 and skin temperature), the 4.0’s Health Monitor feature displays your live heart rate, resting heart rateheart rate variability, and respiratory rate, providing key vitals all in a single place.

Sleep Coach with Haptic Alerts

With the WHOOP 4.0 now capable of sending haptic alerts, we gave the Sleep Coach a major upgrade. For more information, check out our article covering Sleep Coach with Haptic Alerts.

 

Any-Wear™

The first step in making wearables invisible, WHOOP Body with Any-Wear™ Technology redefines what they can be by enabling you to wear your WHOOP 4.0 in a variety of different places on your body. Available in two collections:

  • The Training Collection features sports bras, compression tops, leggings, shorts, and athletic boxers
  • The Intimates Collection also includes bralettes and everyday boxers

Superknit Bands

Constructed for ultimate durability and comfort. SuperKnits are available in dozens of colors and are pre-threaded.

Fast Link Slider

The 4.0’s new Fast Link system makes it easier than ever to change your bands, or remove the sensor to place it in your WHOOP Body apparel. Fast Link lets you quickly slide bands on and off without having to adjust the threading.

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