Portable audio/video playback device e.g. multimedia player, has form, which is described by specific width to length ratio, where circumference of device satisfies specific formula, and cross beam is arranged transverse around neck

摘要

The device has a form, which is described by a specific width to length ratio. The circumference of the device satisfies a specific formula. The base surface covers a projection on the chest of the person carrying the device. The expansion along the length of the body axes of the person is about 20 centimeter. The base surface of the device describes the form of a cross. A cross beam is arranged transverse around the neck.