multi-layer broadband green film coated with BAK-7 prism multi-layer green coating is transparent and bright Great everyone on Christmas Day, Anniversary, Birthdays, mother ' s Day, valentine ' s day, and more 43mm large eyepiece field of view broaden your horizons.10x and 63mm large objective lens The binoculars for bird watching have low-light night for vision portable, esay to carry Perfect for adults bird watching, traveling, sightseeing, hunt-ing, wildlife watching, hiking, sports, Manufacturer: Kaeltsyn