1. 3G, GPRS, wifi are optional 2, touch screen 3, coin/bill validator, card ... POS-1711VNA(Intel845) CPU : Intel celeron dual core E5500, 2.5GHZ RAM : 1 GB DDR3 ,Up to Max: 4G ... types of PC available upon request)Monitor&Screen for AdsTFT LCD : 15, 17 or 19 optional : Brightness 300~1200nits ... full/half cutterCoin accepterCoin acceptance from 0.5 to 2€ coins with coin sorting.Cash accepterreceive 5,10,20 ...