ItemGoogle cardboard v2.0 Style 15*9*8.5cm Printing Customized priting Lens -37mm Diametert 34mmviewable -45mm Focal Length -Asymmetrical,Bi-Convex Working phone All smartphone Suit for 3.5-6inch phone Packing Each in opp bag Printing Customized priting Certificate CE,ROHS Eco-friendly Yes Advantage -Conductive foil push button , - Conductive foam pad to tap screen.