Ultimatte Smart Remote 4 by Blackmagic Design is a compact four-button handheld controller for the Ultimatte family. It provides four user-programmable keys to recall keying and compositing controls on compatible systems, enabling remote adjustment on set. The device connects via USB-C for control signals and features a durable chassis with per-key LED indicators for status. It integrates with Blackmagic's on-air workflow for streamlined live production control.