Amplifiers; Borescopes; Microscopes; Adapter rings for attaching objectives on cameras; Adjustable smartphone and PC tablet stabilizers and mounts; Apparatus and instruments for recording, transmitting, reproducing or processing sound, images or data; Baby monitors; Biological microscopes; Biometric iris scanners; Body-tubes for microscopes; Electron microscopes; LED microscopes; Magnifying glasses; Magnifying lenses; Microscope objectives