This is the Bayonet Objective Lens Cover for Modular Objectives from Swarovski. It is a replacement cap that fits on the eyepiece, and connects via a quarter turn.
Swarovski guarantees for the entire range of branded products purchased from authorized Swarovski retailers, a global and full life-time warranty
covering manufacturing and material defects under normal use beginning with the date of purchase.
The warranty does not cover damage caused by accident or maltreatment. All warranted defects will either be repaired pending feasibility and availability of replacement parts or replaced with either the same product or with a piece of equal value as determined by Swarovski. Swarovski however is lenient with these services.
Call 1-888-207-9873 for more info on obtaining a Service Order #.