DOEL Primary:--model 2102--Display 10.0" LCD-1024 x 600--Processor:VIA 8650 800MHz--OS Android--Ram 512 MB--16 GB Flash,no Hard Drive--Bluetooth--Web cam--DOEL Primary Price Bangladesh 10,000 BDTDOEL Basic:--model 0703--Display:10.1" LED Backlit--Intel ATOM Processor N455-1.66GH Processor--Linux /Windows OS--1GB Ram--250 GB SATA Hard Drive--Bluetooth option yes--Web cam--DOEL Basic Price: 13,500 BDTDOEL Standard:--model2603--12.1LED Backlit Display--Intel ATOM Processor N470 1.83GHz Processor--OS Linux /Windows--2 GB Ram--320 GB Hard Drive--Bluetooth--Web cam--DOEL Standard Price Bangladesh:20,000 BDTDOEL Advanced:--model 1612--14.0"WXGA LED Backlit Display--Processor Intel Pentium P6200 2.13 GHZ--Linux /Windows OS--2 GB Ram--320 GB Hard Drive--Bluetooth--Web cam--DOEL Advanced Price Bangladesh:26000-27000 BDT