The Sega Dreamcast Green VMU is a new-in-box external attachment memory card designed specifically for the Sega Dreamcast console. This green-colored VMU has a wireless range of less than 5 meters and offers a storage capacity of 1 MB. It is a controller attachment that clips onto the controller for easy connectivity. The Sega Dreamcast Green VMU is a lightweight unit weighing only 30 grams, making it a convenient and compact accessory for enhancing your gaming experience on the Sega Dreamcast platform.