Quick alignment, compatible with phone case, portable and stable. Suitable for iPhone X, 8P, 8, 7P, 7, 6, 6s, 6P, 5, 5s, Samsung GALAXY S8, S7, S6, S6 Edge, S5, Note, Huawei, LG, HTC, Sony, Etc.

• BAK 4 Prism is made of best thick barium crown glass with multi-layer achromatic clearing lenses (fully multi-coated, FMC).
• Large Eyepiece produces bigger image and comfortable view.
• BAK 4 has superior reflective and dispersion qualities compared to BAK 7.
• Others have smaller and unclear image, and feels uncomfortable.
• Waterproof binoculars can resist light water, but can not be used in a heavy rain for a long time or soaked in the water.
• Do not use wet cloth to rub the lens, use dry and clean cloth (included) to rub slightly.
• Please put the binocular in a dry place if you do not use in long term.