The e of the monoscope allows it to be used in the harshest weather conditions.br/ The rubber armor es it comfortable to wear and prevents the monocular beach from slipping out of your hand.br/ The fixed-point telescope is made on the BAK4 system and a multi-layer broadband green film lens,br/ Whether you are watching a football game, the telescope can bring you a viewing experience.br/ This kind of scenery can not only enjoy the scenery, but also thes. It is an ideal one-handed observation tool.br/ How to use the telescopebr/ 1. The eye must be 2 cm away from the eyepiece and cannot be directly connected to the eyepiece.br/ 2. Aim the telescope at the observation target, and then slowly turn the turntable of the upper focusing hand until it is clearly visible.br/ br/ specification:br/ Observing telescope 12x42br/ 1 x Objective lens coverbr/ 1 x eyepiece coverbr/ 1 x aluminum alloy bracketbr/ 1 x cleaning clothbr/ 1 x storage bagbr/ 1 x lanyardbr/ br/ Magnification: 10-30 timesbr/ Objective lens diameter: 50MMbr/ Exit pupil di: 15.1MMbr/ Exit pupil diameter: 5.6MMbr/ Near focus: 5Mbr/ Field of view: 130M/1000Mbr/ Eye cup type: rotatingbr/ Focusing: Mid-focusingbr/ Angular field of view: 5.6°at10x2.7°at30xbr/ Optical system: roof opticsbr/ Prism: BAK4br/ Waterproof system: nitrogen-filled, waterproof and anti-fogbr/ Coating: full-broadband multi-layer green filmbr/ Weight: 248Gbr/ br/ result:br/ Please do not observe the sun directly with a telescope, otherwise it will hurt your eyes.br/ If it is not used for a long time, please keep it in a dry place.br/ It can resist light water, but cannot be used in heavy rain or soaked in water for a long time.br/ The telescope is a precision instrument, please do not drop, squeeze or perform other strenuous exercises.