Everything you need is included in the package: A WHOOP purchase includes a 12-month WHOOP One membership, a WHOOP 5.0 device, a Core Net strap, and a wired essential charger. Continuous Monitoring: WHOOP accurately monitors your most important lab-grade metrics, including heart rate, heart rate variability, sleep, menstrual cycle, and VO2 max - providing 24/7 insights to optimize fitness, recovery, and overall health. Understand the Impact of Your Habits: Capture over 160 daily behaviors like training, diet, consistent wake time, stress levels, and more with the WHOOP Journal to understand how habits help or hurt your recovery. Personalized Guidance with WHOOP Coach: Get daily recommendations for sleep, stress, and recovery to maximize your performance, as well as AI-powered answers to your health and fitness questions. Stay Charged for 14 Days and Beyond: Power up with the wired essential charger, designed for fast charging and longer battery life - or add the waterproof wireless power pack to your purchase. Show Less Features: Sleep Monitor