Features

A8022 Universal Magnetic Phone Periscope for Mobile Phones - Black
Applied to almost all mobile phones, it is easy to dismantle and install. Using this lens, you can create a whole new perspectiveFeatures:
The use of optical refraction, we can also effectively capture high-quality images without the
phone camera facing the subject.
High quality optical glass with a transmittance of more than 99%
Mobile phones can also be shooting horizontally and the lens can be adjusted at several directions 
Both the front and back cameras can be used

Dimensions: 27 x 20 x 20mm/1.0 x 0.8 x 0.8inch
Net weight: 12g

This lens is magnetic. There hoop attachment with stickers, as long as your cell phone lens periphery is flat, you can stick on the outside phone camera. Then adsorbed onto the hoop shot on the line, of course, this is if your phone itself is a metal shell, or around the lens is iron, so that the lens can be adsorbed on, so do not even stick to the hoop. (Note: The camera is connected without 100% aligned with the center would not affect the image)