[ Alcoholmeters; Breathing apparatus for underwater swimming; Cell phone cases; Cell phone covers; Charging appliances for rechargeable equipment; Electric meters; Electrical amplifiers for use with musical instruments; Electrical outlets; Infrared detectors; LED position sensors; ] Light emitting diodes (LEDs); [ Magnetic object detectors; OLED (Organic light emitting diode) display panels; ] Power supplies; [ Protective films adapted for smartphones; ] Rechargeable batteries[ ; Semi-conduct...