Casio Alarm Clock MA-2
<a href="//commons.wikimedia.org/wiki/User:Sergei_Frolov" title="User:Sergei Frolov">Sergei Frolov</a>, Soviet Calculators Collection,<a rel="nofollow" class="external free" href="http://www.rk86.com/frolov/">http://www.rk86.com/frolov/</a>
<span class="int-own-work" lang="en">Own work</span>