Cameras; Accumulator boxes; Audio cassette recorders; Batteries and battery chargers; Connections, electric; Data cables; Digital audio players; Digital video cameras; Electric wires; Horns for loudspeakers; Lenses for cameras; Light switches; Measuring rulers; Movable sockets; Protective helmets for animals; Reading glasses; Sensors for scientific use to gather animal biometric data; Solar batteries; Temperature indicators; Wearable computers in the nature of smartwatches