The Nikon SB-R1 Close-Up Macro Speedlight Kit comprises of two SB-R200 Remote units attached to the lens, triggered either by the pop-up flash of the camera or an attached speedlight. Fully automatic TTL exposure calculation and synchronisation is carried out using infrared wireless communication between the camera’s metering system and the remote units. Take your Macro flash photography to the next level with the SB-R1 Macro Kit!