10-300x40 Zoom Powerful Monocular Telescope Mobile Phone Lens Professional Outdoor Camping Bird Watching Portable Retractable 3M Near fcous Broadband green film Stretcg design BAk4 prism 10-30 continuous amplification Lighweight and portable New ABS plastic steel material Our Advantages 1.Mobile phone can be connected to take photos,and can be viewed separately 2.High power without shaking,details in your eyes 3.Stretch,rotate and zoom to enjoy a different experience 4.Low-light night vision,light can be seen at night 5.ABS plastic steel synthetic steeled material FMC Coating Shocking field of view from FMC broadband antireflective antireflective film BAK4 Prism With High Refractive Index BAK4 Prism with high refractive index is uesed,the prism plays a very impotant role in the optical structure,the light transmittance is higher than that of BK7,and the field of vision is more transparent Broadband Green Film Objective Wideband green film is used to effectively improve the clarity and color! Large diameter,high brightness Large Eyepiece Design Have a 15mm eyepiece,the larger the eyepiece is the more comfortable it is to watch,the longer the pupil is ,and the user wearing glasses can easily watch Lifting Eye Mask There maybe differences in vision between the left and right eyes,when using,you can adjust the definition frist,and you can easily watch with glasses Flexible Foucus The focusing wheel is made of hig-quality rubber leather,which is comfortable to handle ,beautiful and high-grade,easy to rotate abd accurate focusing