The video features a close-up view of a bicycle's rear wheel and gear system. The gear system is made by Shimano and is labeled as "Alfus". The gear system is black in color and is attached to a black bicycle wheel. The video shows the gear system from different angles, highlighting its design and structure. The chain of the bicycle is also visible, and it appears to be in good condition. The video does not show any movement or action, as it is focused on the static parts of the bicycle.