Recently after 10 years use I returned my Trinovid 10X42BN binos to Leica for service after noticing what I thought might be a problem developing on the outer part of the lens. Leica mailed and informed that they were replacing some components. A week later my binos were returned by courier looking new. Lenses , armour replaced , alignments corrected and focusing serviced. I highly praise Leica's excellent efficient service. All this was done free of charge under the Trinovids 30 yr warranty.:t: