This is a lot of four Motorola MC75 mobile handheld computers and barcode scanners. Comes with 4 bay charger bank and power supply. The computers are running a mobile version of windows, I don't know the exact version. They all boot up, and all barcode scanners illuminate. They operate off of WiFi. The batteries are very weak and do not hold good charge. If you plan to have any extended periods of use outside of the charger, the batteries will need replacing. They are fairly cheap and are easily found on Ebay. Sold as is, for parts or not working, no returns.