This is a cable release specifically for the SIGMA fp. Amazon selling price: 3,773 yen - Brand: SIGMA - Model: CR-41 - Type: Cable release - Connector: 3.5mm jack - Lock function: With lock function [Included items] - Release body - Original box - Instruction manual Used a few times after purchase. There are some scratches around the button, but there are no problems with use. Please refrain from purchasing if you are concerned about minor imperfections. Thank you.