Specification: Brand: Datyson Focal length: 4mm Size: the standard 1.25 inch /31.7mm telescope common eyepiece interface The structure of the optical system: Plossl Eyepiece Coating: Fully coated blue film Weight: 64g Genuine Datyson
Plossl 4mm high-power eyepiece, suitable for 1.25 inch /31.7mm astronomical telescope Apply: watch the scenery, bright celestial observations, nebula and so | 
