Radio network technology and display thereof can be managed when multiple services and radio network technologies are available to a multi-technology mobile device. The display simultaneously shows a 3D digital image and an associated 2D digital image of a selected drawing. The first antenna, the second antenna, and the third antenna are activated at the same time for transmitting the electronic wave signal. A rail assembly is coupled to the track members at end portions thereof and extends therebetween. The micro-oscillator includes: a plurality of beam-type first oscillator elements 33 connected in parallel and a non-resonance beam-type second oscillator element 34 arranged between the first oscillator elements 33 adjacent to each other.