EC-451 (650-0893) Specificatins Faxback Doc. # 7609 Display.......................................................8 Digit, LCD Operating Temperature.......................... 32 degrees F-104 degrees F (0 degrees C-40 degrees C) Power Supply........................Solar Panel or One Button-Cell Battery (Cat. No. 23-117) Dimensions...............................3/8 x 4 5/16 x 2 3/4 Inches (HWD) (10 x 110 x 70 mm) Weight.................................................About 1.76 oz (50g) Battery Life..............................................About 4500 Hours (or 2 Years Average Life) (br/all-9/19/94)