It can be directly inserted into a 6 cm wide door for observation. Adjustable angle, no viewing angle; suitable for hidden observation. Full metal alloy shell, professional grade product! It can be carried by hand, it can be extended from 43 cm to 70 cm, and the observation lens is 2X2 cm. The height of the lens can be adjusted up and down, and it is equipped with a telescope function, so you can observe distant targets at close range. found, suitable for hidden observation! Can be directly inserted into the 6cm wide door under the space for observation. All-metal alloy shell, Hand-held can carry, the length can be extended from 43CM to 70CM, Observer lens 2X2CM. Colour:black Material:Aluminum alloy Package Contents: 1 * Periscope 1 * removable handle 1 * storage bag Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.