Review on High Power 12X50 Binoculars with Smartphone Holder & Tripod - Waterproof, Durable, and Clear FMC BAK4 Prism Binoculars for Bird Watching, Camping, Hiking - Ideal for Adults by Carlos Massey

I have come to the conclusion that some characteristics of inexpensive binoculars can be misrepresented and exaggerated when they often still represent a reasonable value proposition. For example: FMC, BAK4, waterproof and exit pupil. However, the diameter (in mm) of the lens is the defining feature (and usually part of the name - 50 in 12x50) of binoculars, which even a primary school student can measure with a ruler. On this website they are called 12x50, the packaging said 12x50, the binoculars said 12x50. You did NOT measure 50mm. Her size was 42 mm. Although 42mm is also a common lens size for binoculars, it is wrong to market it as 50mm.