This is a TC-2004 timer remote control, compatible with Nikon MC-36 (10-pin terminal). I have been using it with a D500. - Model Name: TC-2004 - Power: 3.0V AAA batteries x 2 - Function: Timer remote control - Brand: ROWA JAPAN There are no noticeable stains or scratches, but upon listing, I have not been able to perform a function check as I do not currently own a camera with a 10-pin terminal. Thank you for viewing.