This calculator can operate with a single hand or even just a thumb like text SMS. Both light and slim and comes with a strap for your bag or to be worn as an accessory. SIZE W 1 1/2" H 4 3/4" D 7/16" BATTERIES Button battery (LR44)~1 MATERIAL ABSE Acrylic FUNCTION Calculation (8digit) / Auto power off / Time / Date and time display
