The e of the monoscope allows it to be used in the harshest weather conditions.br/ The rubber armor es it comfortable to use and prevents the monocular beach from slipping out of your hand.br/ The spotting telescope is made on the BAK4 system and a multilayer broadband green film lens,br/ Whether you are watching a football game, the telescope can provide you with a viewing experience.br/ This kind of sighting telescope can not only enjoy the scenery, but also see 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 dial of the upper focusing hand until it is clearly visible.br/ br/ specification:br/ 1 x color boxbr/ 1 x mirror bagbr/ 1 x manualbr/ 1 x lens cleaning clothbr/ 1 x lanyardbr/ 1 x dust coverbr/ 1 x40x60 br/ Magnification: 40 timesbr/ Prism material: BAK4br/ Material: optical glassbr/ Objective lens diameter: 40mmbr/ Eyepiece diameter: 20mmbr/ Product viewing angle: 7°br/ Product field of view: 155m/9500mbr/ Mirror body material: composite materialbr/ Waterproof grade: life waterproofbr/ Field of view: 66m/8000mbr/ Lens: optical glass lensbr/ Prism system: top prism systembr/ How to use: handheld or tripodbr/ Size: 17x7x9.5cmbr/ Colour: Blackbr/ Weight: 0.32KGbr/ Lens coating: multi-layer broadband green filmbr/ Commercial use: camping, travel, concert, outing, observationbr/ br/ notes:br/ Please do not use the monoculars to look directly at the sun, otherwise it will hurt your eyes.br/ If you do not use it 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 immersed in water for a long time.br/ The telescope is a precision instrument, please do not drop, squeeze or perform other strenuous exercises