ITEM NAME:Zoom HD Lens Optical Monocular Telescope Prism Tripod Clip For Smartphone 40X60.Multiple: 40x60. Eyepiece: 20mm. Move the objective lens to adjust the handwheel until you see a clear scene. The eyepiece's rotation can detail for more precise focus. Material: plastic shell, FMC coating, BAK4 prism, all optical glass.
