Universal 35 x 50 HD Camera Lens Zoom Monocular + Clip for Smartphone is equipped with Roof system BAK4 prism and in nice experience. Large 50mm objective lens diameter provides you wide angle. Objective lens is coated with FMC green film and eyepiece coated with blue film. 95 percent light transmittance ensures clear image. With mobile phone clip, it is convenient to install your mobile phone on, so that you can take photos conveniently! Are you interested in this gadget?