Ti Nspire Graphic Calculator (NS/GC/1L1/K) (2010 Model) used. Ti-NSpire Graphic calculator Model (NS/GC/1L1/K) from 2010 Nice graphic calculator for doing school work or number crunching.. Has too many features to list. Has an option for a rechargeable battery which you can get separately. This unit has the removable keyboards for changing out functions. Very cool.... :) All functions work and connect with your Windows PC. I tested it on Win 7 and got it to download with the Ti Connect software that you can get from Texas Instruments websites. Make sure you load your drivers in properly. Don't know if it works on Win 10. All buttons work and the display works fine with no dead pixels. Includes cables, software, 2 removable keyboards, and 4 AAA batteries You get everything you see in the pictures. All sales final No returns, if you have questions please message me.