Professional Monocular Metal Monocular HD Zoom Telescope Portable Telescope Powerful Binoculars with Tripod&Phone Holder for Camping Travel Single10-300x40

"Objective Lens Diameter?25mm Eyepiece diameter?10mm Magnification?10-300x Field of View?3.5° Type?Monocular Water Resistance Level?IPX4 Prism Description?BAK4 Model Number?10-300x40 Material?Metal Lens Coating Description?FMC Focus Type?CENTRAL Type?Telescope Material?Metal Exit pupil distance?10mm Exit pupil diameter?25mm Package?1PCS Function1?monocular telescope for smartphones Function2?spyglass zoom Function3?telescope phone adapter Function4?telescope camera Note: Dear buyer, if you don't know how to use the telescope after receiving it, please contact us. If you have any other questions, you can also contact us at any time. We will do our best to help you solve it, thank you! "