Vintage Speak & Math Texas Instruments Electronic Learning Aid 1980's

Vintage 1980's Speak & Math electronic learning aid. Ages 6-11 makes learning fun with this hand held game. Tested and works properly .....Takes 4 C batteries....not included. Has 5 distinct math games solve it, word problems, greater than/less than, write it and number stumper. Three levels of difficulty. Headphone and AC jack at the side neither included.