Google Cardboard VR Unassembled Kit - By Unofficial Cardboard (TM) Includes: 1 (3pcs) e-flute corrugated cardboard: die cut to exact Google Cardboard VR specification 2 Biconvex optical lenses: 25mm diameter, 45mm focal length 1 Ceramic disc magnet 3/4", 1 Neodymium (rare earth) magnet 3/4" x 1/8" 2 Pairs of Velcro (attached), 1 #32 rubber band 1 Programmed NFC tag (NTAG203 chip): launches the Google Cardboard VR app automatically on phones that support NFC. (attached)