7 inch E-ink E-book; O.S.: Linux Memory: DDR2 128MB Operating system: Linux Battery: 2000mAH 7 inch E-ink E-book with wifi and Linux system Model nameE861RKImageChipsetRK2818CPU Type / FrequencyRockchip 2818 Dure Core ARM9 + DSP. CPU: 600MHz, DSP: 560MhzDDR2128MB (Standard) 2X128MB=256MB (optional, additional cost). Mobile DDR: 128MB (optional, additional cost)Display TypeE-ink 4:3 VizplexTouch ...