The Reizen 12-Digit Jumbo Talking Calculator features easy to use oversized 1-1/2" wide keys and a large 1-1/8" x 5-5/8" LCD with 7/8" high numbers. To ensure accuracy, number and function keys pressed as well as calculation results are announced. Volume is adjustable (Low, High, Off) and the hinged 12-digit LCD pivots up for easier viewing. Time display (hours/minutes/seconds). Alarm with beep or 3 melodies. Uses 2 AAA batteries (not included.) Calculator measures 8-1/4" x 11-1/2" Weight (with batteries installed): 15 oz.