What is the best way to clean the outer optical surfaces of binoculars?
How to Clean Your Binoculars [Video]
ZEISS Lens Wipes, Lens Cleaner for Glasses, Cameras & Binoculars,Individually Packed Single Use Disposable Cloths in Sachets, for Handy and Portable Spectacle Cleaning On The Go, 200 Count (Pack of 1): Amazon.co.uk:
How to Clean and Store Binoculars — Outdoorsmans
How to maintain binoculars – Hawke Life
How best to clean, restore and maintain old binoculars for astronomy