Here is Zenith’s first entry into the smaller shirt pocket radio market. This is the tan version of the initial Royal 50 model. It came out 3 years after Japan started making smaller shirt pocket sized sets, but the wait was worth it. The sound quality of the Royal 50 vs. Japanese sets is very noticeable with Zenith having a much deeper and richer tone. This radio plays very well on 2 AA batteries. Clean in and out.