Metz WT-1R Receiver for Nikoncameras and Metz flashes.Technical specifications:Wireless 2.4 GHz radio controlLCD displayTransmission of the TTL signalSupports high speed synchronisation (HSS and FP) up to 1/800015 canalsManual modeGroup controlWireless operating distance up to 300 mIntegrated USB interface for firmware updatesSync cable connection