Key Benefits Personalised insights for improved sleep, smarter training and faster recovery. Tracks heart rate, skin temperature and blood oxygen levels. Rechargeable for continuous 24/7 monitoring.   Elevate your health and performance with WHOOP 4.0, a cutting-edge wearable device designed to continuously monitor your physiological data. This advanced fitness tracker comes with a 12-month subscription, which provides access to personalised insights and science-backed performance optimisation.   The WHOOP 4.0 tracks a comprehensive range of metrics, including heart rate, respiratory rate, skin temperature, blood oxygen levels, daily activity, and sleep. This data allows WHOOP to calibrate to your baseline and calculate daily performance values, health metrics, stress levels, and long-term trends. With real-time coaching based on your unique data, you can make informed decisions to enhance your overall wellbeing.   The WHOOP Journal complements these insights by tracking daily behaviuors such as activity, nutrition, and stress levels. This feature helps you identify how various habits impact your sleep and recovery, supporting the development of healthier lifestyle choices.   WHOOP’s three key scores—Sleep, Strain, and Recovery—offer a deep understanding of your bodys dynamic needs. Optimise your recovery with lab-grade sleep tracking, measure your physical and mental exertion for a complete daily assessment, and gauge your adaptation to stressors to determine whether you’re ready for more activity or need additional rest.   Whats inside: Exclusive 12-month WHOOP subscription for personalised insights and feedback.* 4.0 Hardware: 5 LEDs, 4 photodiodes that provide accurate data validated in lab studies and third-party testing. Onyx SuperKnit band. Waterproof battery pack.   *Please note that the free subscription period is exclusive for new WHOOP customers and does not apply if you already have an account.