Nikon UT-1 Communication Unit with ON/OFF switch and LED indicator. Main unit only. It was unused in its box when it came from the warehouse, but it was left out of the box as is, so I think there are minor scratches and fingerprints. - Brand: Nikon - Model: UT-1 - Function: Communication Unit - Switch: ON/OFF - LED Indicator: ERROR, LINK, POWER Thank you for looking.