I found a link to the data sheet pdf http://www.soselectronic.com/a_info/resource/d/dem/DE119-RS-20_75.pdf
I think that you can figure out how to use this LCD but you'll have to write to it like it was an LED seven segment display. You won't be able to use the standard LCD libraries.
The data sheet shows where to connect for each of the four digits and the colon/decimal point. The Arduino will not have enough output pins to directly connect to all of the LCD inputs. If you really want to use this device, look into schemes that use 7447 7 segment drivers or multiplexing.
I paid about $2.63 each for my last batch of 44780 compatible LCDs. Saving $3 isn't worth the grief this thing will cause you. If you're not experienced with displays, I'd recommend you start with the ones that are more commonly used.