WikiReader WikiReader displaying its virtual keyboard Manufacturer Openmoko Type Reader Operating system None (Embedded device) Forth interpreter is included CPU Epson S1C33 E07 microcontroller Storage MicroSD card Display Monochrome touchscreen Input Touch interface Power Two AAA batteries Dimensions 100 x 100 x 20 mm (3.9 x 3.9 x 0.8 inches) Weight 120 grams (4.2 oz) Website github.com/wikireader/wikireader