The Preston Cinema Systems Micro Force Digital MDR-2 w/ Transceiver is a follow focus device designed for use with cameras. Made of lightweight aluminum, this black unit is compact with dimensions of 4 inches in length, 6 inches in height, and 2 inches in width. It has a neutral buoyancy and is compatible with the MDR-2 model. The device features wireless connectivity with a transceiver, allowing for easy setup and operation. This item is ideal for film photography enthusiasts looking for a reliable and adjustable follow focus solution. Untested, internals checked and look great.