The WHOOP Wireless PowerPack is a portable, waterproof charger designed for the WHOOP fitness tracker. It allows for continuous data access for over 14 days on a single charge and can charge the WHOOP device from 0%-100% in just 2 hours. The device is IP68-rated water-resistant, making it suitable for workouts and outdoor activities. It includes a USB-C to USB-C cable for easy charging and is compatible with WHOOP One, Peak, and Life models.