Acoustical insulation barrier panels

Batteries; Batteries and battery chargers; Batteries, electric; Blank USB flash drives; Cabinets for loudspeakers; Cell phone backplates; Cell phone cases; Cell phone covers; Cell phone straps; Chargers for electric batteries; Computer peripheral equipment; Earphones; Earphones and headphones; Hands free kits for phones; Headphones; Microphones; Mobile phone straps; Notebook computers; Portable media players; Portable telephones