Fits Manfrotto 701HDV fluid head

501PL compatible

QV-1 uses an innovative magnetic quick release

QV-1 will magnify your lcd screen image by 2.5x

QV-1 has an adjustable diopter ring

QB-1 has 8" 15 mm Rail Rods

WHATS INCLUDED  

1x QV-1 LCD View Finder

1x Magnetic Quick Release Base Plate

1x Lanyard Neckstrap

1x Hex Key Allen Wrench