Binoculars & Telescopes
Portable Binoculars High Power 10-30x42 Monocular Telescope, High Power HD Zoom Monocular Telescope Compact with BAK4 Prism Lens ED Glass for Adults Bird Watching
10-30X42 High Power Magnification: As the strongest monoculars, it offers up to 10-30x magnification in a 42mm lens. This magnification gives you a clear view at up to 1000yds away which can provide you amazing viewing when travelling, bird watching...
https://www.bizrate.co.uk/binoculars_telescopes/portable-binoculars-high-power-10-30x42-oid40336375166.html