Plastic 8 Digits LCD Display Mini Pocket Calculator Black w Keyring Peoduct Name : Mini Pocket Calculator;Material : Hard Plastic, Metal Color : Black, White, Silver Tone;Powered By : 1 x LR1130 Button Cell Battery(not included) Size : 6.7 x 4.5 x 0.8cm / 2.6" x 1.8" x 0.3"( L*W*T);Key Ring Diameter : 3.3cm / 1.3" Net Weight : 23g Package Content : 1 x Mini Pocket Calculator