The Fidragon Choronograph is an ideal piece of equipment for every airsoft player. Being able to check your airsoft gun’s velocity at home is a time and money saver. The last thing that you would want is your gun not passing field regulations. This is also a great piece of equipment for those who tune their own airsoft guns. The external construction is made out of polymer for durability while maintaining an overall lightweight setup. Unlike most portable chronographs that require an extra power source, the Fidragon Choronograph features a built in battery to alleviate the extra need to carry more items.