Compatible with the following cameras: Canon 7D, 5D Mark II, 1D Mark IV, T2i/550D, T1i/450D, 60D, G9, G10, S90Nikon D700, D300s, D300, D90, D7000, D3100, D3000Panasonic DMC-GF1, 2, LX3,5Pentax K-7Any DSLR camera with a 3" LCD screen Set-up instruction:Special Tips: The optical system of Perfect Foldable LCD viewfinder is with light collecting function. Avoid sun or strong light source shining directly the LCD screen through perfect foldable LCD viewfinder in case of any damage.Never aim at sun or strong light source through Perfect Foldable LCD viewfinder.In case of loose LCD screen protector or affecting the life span of perfect foldable LCD viewfinder ,Please remove the Perfect Foldable LCD viewfinder if no use for a long time.Please kindly note the necksrap is only for Perfect Foldable LCD viewfinder instead of the DLSR Camera. Never try to wear the neckstrap with DLSR camera.For removing the LCD screen protector, insert plastic flake or transparent blister into the gap between the LCD monitor and LCD screen protector, then go around the adhesive edge for loosening and separating LCD screen protector. Finally remove the glue sticker via the clean liquid.The eyecup can be rotatable within 180 degrees package contents: 1 x LCD Perfect Viewfinderr 1 x Screen Protector 1 x Neck-strapNote: this item is 3 times(3x) magnification, not three items included.Caution: The Neck-strap is intended for use only on the LCD Viewfinder, it is not designed to support a camera. Do not wear the neck-strap with a camera.