Camcorders; Cameras; Headphones; Loudspeakers; Megaphones; Microphones; Batteries, electric; Biometric fingerprint door locks; Cabinets for loudspeakers; Chargers for electric accumulators; Computer peripheral devices; Couplings, electric; Ear pads for headphones; Earphones and headphones; Electrical adapters; Electronic access control systems for interlocking doors; Electronic lock assemblies; Electronic locks; Electronically-operated door latches; Flashlights for use in photography; Hands-f...