Vintage Casio FX-7700G scientific calculator with cover. Requires 4 C2032 batteries to operate, which are NOT included. Screen lights up - not sure how to operate it, so I didn't put it through its paces. Lens, body and cover all have light scuffs from use. Battery compartment is clean. Please see all photos for condition. Measures approx. 6 13/16 x 3 5/16".