Cases for mobile phones; Cell phone cases; Ear buds; Earphones; Earphones and headphones; Earphones for cellular telephones; Headphones including attached lanyard; Magnetic pens; Magneto-optical pens; Mobile phone cases featuring rechargeable batteries; Mobile phone straps; Personal headphones for sound transmitting apparatuses; Personal headphones for use with sound transmitting systems; Wireless cellular phone headsets; Wireless headsets for smartphones