Uxcell Plastic Pocket 8 Digits LCD Display Calculator, Clear/Gray Product Name : Mini Calculator; Material : Hard Plastic, Metal Color : Clear Gray; 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"( LWT);Key Ring Diameter : 2.3cm/ 0.9" Net Weight : 17g Package Content : 1 x Mini Calculator with Key Ring