There are 2 sizes:

EOS2, the compact one - For Label roll with diameter up to 152MM 

1.1 Label printer	EOS2
Printable resolutiondpi	203	300
Print speedup to mm/s	150	150
Print widthup to mm	108	105.7
Label roll diameterup to mm	152	152
Power supply	100 - 240 VAC, 50/60 Hz

EOS5 for large label rolls - For label roll with diameters up to 203MM

1.2 Label printer	EOS5
Printable resolutiondpi	203	300
Print speedup to mm/s	150	150
Print widthup to mm	108	105.7
Label roll diameterup to mm	203	203
Power supply	100 - 240 VAC, 50/60 Hz