Computer peripheral devices; calculating machines; protective case for calculator; electronic tags for goods; covers for computer keyboards; slide-rules; calculators; smart watches; battery chargers; batteries; personal security alarms; temperature indicators; actinometers; hygrometers; digital cameras; selfie sticks; earphones; wearable activity trackers; time recording apparatus; telephone apparatus; wireless telephony apparatus; cabinets for loudspeakers; video receivers; telescopes; elect...