Coils, electric; Conductors, electric; Electronic controllers used to reduce power consumption; Fuse wire; Gasometers; Headphones; Integrated circuits; Integrated circuits, integrated circuit chips, and integrated circuit modules for digital video compression and decompression; Printed circuits; Rectifiers; Refractometers; Switches, electric; Electric resistors; Electrical plugs and sockets; Electricity limiters; Optical apparatus and instruments, namely, optical ports for underwater photogra...