EC-344 (650-0861) Specifications Faxback Doc. # 8542 Power Source.......................................One Lithium Battery, 3V, Type CR2032 Cat. No. 230-1626 Battery Life...................................................About 1 Year Automatic Power-Off.........................................About 4 Minutes Working Temperature.............................................-40F to 60F Dimensions....................................311/25x24/26x1/5 Inches (HWD) (86x54x5 mm) Weight......................................................0.94 oz (26.6g) (RLR-10/28/93)