Tablet computer; Meat thermometers; Weighing scales; Amplifiers for wireless communications; Sound recording apparatus; Global positioning system (GPS); Electric switches; Audio and video receivers; Sound cards; Loudspeakers, headphones, microphones and CD players; Soil moisture meters; Portable media players; Bone conduction earphones; Electric door chimes; Electric wires and cables; Security cameras; Plugboards; Multimedia projectors; Field-glasses; Power adapters