Pentax 9x21 UD Binoculars (Green) Amplifiers A: FH7 uses four Knowles

A: FH7 uses four Knowles balanced armatures and a diameter of 13

5 degrees/Field Of View At 1000m-131 meters

For analog outputs

Fixed Aperture: f/8

Pentax 9x21 UD Binoculars (Green) Amplifiers A: FH7 uses four KnowlesRoof Prism Light Path Anti Reflection Multicoatings Closed Bridge Configuration Compact Take Anywhere Design As It Is Palm Sized And Easy To Use, It Can Be Easily Taken Everywhere And is Also Suitable For Sharing With Children. If You Have Differing Prescriptions in Each Eye, You Can Adjust The Left And Right Lenses Independently. The Stylish Two Tone Color Design is Cool. The Optical System is Multi Coated to Prevent Unnecessary Light Reflection,