Speedotron Universal light unit is intended for short-flash duration, action-catching applications. It is suited for Sports and Dance Photographers, or anyone requiring very short flash durations. This Black Line light unit utilizes modular aluminum construction for durability. It is cabled with two new locking/quick-release power supply connectors, which are compatible with all older Black Line power supplies. A power supply for this flash head is required. The entire module has been constructed with Aluminum.