2.8x 3.0" 3:2 LCD Viewfinder Magnifier Eyecup Extender V3 for Canon 600d 60d T3i 4mm magnetic bracket The viewfinder is mounted onto the camera with the use of a magnetic bracket. The bracket should be attached with a narrow strap of tape. The viewfinder features four magnets on the mounting side,and it can be easily and quickly detached from your camera High-quality, soft-touch material Anti-reflexive coatings designed for Canon Good product and after-sales service, have one year warranty