Product details Batteries ‏ : ‎ 1 CR2 batteries required. Is Discontinued By Manufacturer ‏ : ‎ No Product Dimensions ‏ : ‎ 9.91 x 10.67 x 6.1 cm; 72 Grams Date First Available ‏ : ‎ 6 August 2012 Manufacturer ‏ : ‎ Casio ASIN ‏ : ‎ B0049HSJ76 Item model number ‏ : ‎ GD-100-1BDR (G310) Country of Origin ‏ : ‎ China Department ‏ : ‎ Men