YONG NUO MC-C1 Timer Remote Cord Specifications: Suitable camera: camera with remote termintnal Attachment method: lock screw Timer display: seven-segments per digit, 5 digits Mode display: long exp, time and normal mode Electric beeper: emits sound during long-timer exposure or time mode LCD illumination: LCD illumination button Battery duration: approximately 80 hours (when shutter release button is pressed) Power source: lithium battery cr2032 Length: approximately 80cm or 31.5 inches Weight: 56g (without battery) Compatible to:Canon eos 30, 33, 50, 300, 300d (digital rebel)/350D (rebel XT)/400D (rebel xti) 450D(rebel xsi) Contax N/contax 645 Pentax IST-D