TOOGOO(R) Clear Green Plastic 8 Digits LCD Display Mini Calculator w Keyring Peoduct Name : Mini Calculator;Material : Hard Plastic,Metal Color : Clear Green;Powered By : 1 x LR1130 Button Cell Battery(not included) Size : 6.3 x 3.7 x 0.8cm/ 2.5" x 1.4" x 0.3"( L*W*T);Key Ring Diameter : 2.3cm/ 0.9" Net Weight : 17g Package Content : 1 x Mini Calculator with Key Ring