The PocketWizard 801-329 Plus X Transceiver is a set of two black radio transmitters designed for use with cameras and photo equipment. This model features a hot shoe slave/flash connection, making it easy to set up and control your lighting effects. With a weight of 0.75lbs, these transceivers are compact and convenient for on-the-go shooting. Perfect for photographers looking to enhance their lighting setups with precise control and reliability.