The DP-6120 was a 25 CPS 136 Pica Pitch daisy wheel printer which featured bi-directional printing and 96 different ASCII characters.  It appears that Exidy just rebadged the TEC FP-1500-25, which was a popular serial printer at the time.  The DP-6120 was a letter quality printer which means that the quality was considered high enough for printing out letters for business correspondence (most printers of the time had dodgy print quality).  It connected to the serial interface and retailed for $2,195.