Telescope Zoom eyepiece wide angle 7-21mm
 
7-21mm zoom eyepiece; allows you to change magnification power without swapping out eyepieces; suitable for viewing the lunar surface; planets; nebulae; star clusters;
5-elements 3-groups lens structure; 5-elements 3-groups made of high index glass deliver sharp; high contrast vistas; get bright and true image colors;
52°-36° field of view; SV135 zoom eyepiece allows you to see different wide field of view under the same viewing conditions;
13mm-14mm eye relief; with rubber eyecup; provides comfortable long term viewing for people with or without glasses;
Standard 1.25-inch interface; compatible with 1.25-inch telescopes and filter accessories; groove anti-drop design; effectively prevents accidental falling during use.