Optical couplers; acoustic couplers; video recorders; earphones; electrical plugs and sockets; smartwatches; pedometers; electric navigational instruments; wearable activity trackers; digital photo frames; cabinets for loudspeakers; microphones; headphones; electronic collars to train animals; remote controls for radios, televisions, stereos; stands adapted for mobile phones
Optical couplers; acoustic couplers; video recorders; earphones; electrical plugs and sockets; smartwatches; pedometers; electric navigational instruments; wearable activity trackers; digital photo frames; cabinets for loudspeakers; microphones; headphones; electronic collars to train animals; remote controls for radios, televisions, stereos; stands adapted for mobile phones
Optical couplers; acoustic couplers; video recorders; earphones; elect...