Optical Head Magnifier,suitable for repair of watch, camera, cell phone and other subminiature parts. Optical Head Magnifier (Optical ... of lens or double lens. Be suitable for repair of watch, camera, cell phone and other subminiature parts and observing curio, stamps ... UM-4*2All of them are suitable for repair of watch, camera, cell phone and other subminiature parts and observing curio, stamps ...