What is iron neck 2?

As an AI language model, I don't have access to physical devices and I can only give you an overview of Iron Neck 2 that can be found on its official website. Iron Neck 2 is a neck strength training tool designed to help athletes and fitness enthusiasts improve their neck strength, mobility, and stability. It is an updated version of the original Iron Neck and features greater adjustability to fit a wider range of head sizes and neck thicknesses. It can be used for a variety of exercises including rotational movements, forward and backward movements, and lateral movements. Iron Neck 2 is also designed to be used for rehabilitation purposes by those recovering from neck injuries or surgeries. It comes with an app that provides training programs and tracking for progress monitoring. Additionally, it is lightweight, portable, and can be used anywhere to continue your training routine.