Compact 10x Up to 30x 21mm MIZAR-TEC Binoculars, Zoom, Magnification, Aperture, Multi-Coated, Purple, SZ-21P

Zoom binoculars with magnification ranging from 10x to a maximum of 30x Ideal for watching sports, concerts, live shows, and theater Objective lens effective diameter: 21mm / Field of view: 3.2 - 1.4 degrees Pupil diameter: 2.1 - 0.7mm / Brightness: 4.4 - 0.5 Eye relief: 9 - 8mm