Optical glasses; Smart glasses; Head-mounted video displays; Computer printers for printing documents; Rangefinders; Amplifiers; Sun glasses; Electric locks; Virtual reality glasses;Mobile phone covers; Stylus pens for touch screen devices; Laser rangefinders; Mobile phone screen protectors; Downloadable virtual reality game software; Security alarms; Wearable computers in the nature of smartwatches; Protective cases for cell phones; Body fat scales for household use; Digital door locks; Elec...