Monoculars Telescope astronal binoculars adults high power for indoor and outdoorbr/ Parameter:br/ Type: portable telescope (can be connected to a mobile phone stand)br/ Quantity: 1br/ material: plasticbr/ Colour: Blackbr/ Coating: br/ Prism system: Paul systembr/ Prism material: BAK4br/ Eyepiece diameter: 18mm/0.71inchbr/ Objective lens: 40mm/1.57inchbr/ Net weight: 340g/11.99ozbr/ Waterproof and anti-fog: life waterproof (does not rt diving)br/ The package contains:br/ 1 × monocular telescopebr/ 1 × instruction manualbr/ 1 × boxbr/ Note:br/ - Adults are prohibited from using telescopes to watch the sun directly! Using advanced binoculars to watch the sun can cause incurable injuries to the human eye.br/ Hint:br/ - If you will not use it for a long time, please put it in a dry place. Wipe the lens with a clean dry cloth. If there are stubborn stains, wipe with a cloth moistened with alcohol. It will be easy to delete.