Here are some of the specifications of the Casio FX-9860GIII – C81:

Model number: FX-9860GIII – C81
Display: 128 x 64 dots
Memory: 1.5 MB Flash-Rom
Functions: Over 2900 functions
Dimensions: 175.5 x 83.5 x 18.7 mm
Weight: 190 g
Battery: 4 AAA batteries