Rasger ® Sports Series
Product Using Instruction and FAQ

Frequently Asked Questions

Binoculars are one kind of device which can magnify the images distant away, so we could see them clearly. With development of science and technology, we have invented many instruments in order to help strengthen or natural senses. Binoculars can let us see things further away also apply the same idea.
Many of us think that magnification means how many times bigger of images these binoculars are able to magnify. However, it is not completely correct. The term “magnification” means how much closer these binoculars are able to bring the images to. For example: If your binoculars’ magnification is 10x, it means the images you see through the binoculars 100 yards away would be the same as the what you could see eventually in 10 yards away.
Binoculars do not have NV function. In the low illuminating environments, binoculars can only make the images a little brighter after focusing. However, if you need to observe in complete dark environments, please buy a professional night vision.
Some so-called “Auto-focusing binoculars”, in fact, only use our natural focus adjusting to achieve this effect, which does not relate to any device optical design. Any binoculars with lower magnification level can do the same thing.
Please use a clean and dry professional lens wiping cloth to wipe off the dusts on the lenses. If you need to clean the entire surface, please use a small amount of pure alcohol and wipe in one direction with absorbent cotton pieces.