New developments in the world of watches

During a long period people easily could measure the time with the aid of a small complex element as clock. For more comfort it was made the first portable timepiece which is the <a href="http://topcasiowatchshops.co.uk/casio_g-shock_ga-100-1a1er.html">Casio GA-100-1a1er</a>. It came out in 15th cen