Fibrum Portable Virtual Reality Kit with Unlimited Fibrum App Downloads - &nbsp;4"-6" Screen Smartphones A full collection of 33 mobile VR apps is included! Compatible with smartphones on iOS and Android, screen size is from 4 to 6 inches. The weight is only 120gr. The headset is easy to take with you wherever you are. Wide field of view (110 degrees), high quality glass lenses (no extra configuration needed), and head tracking technology put you in the action! High-quality hypoallergenic plastic case suitable for mass usage.