KPR2 Krypton Flashlight Replacement Bulb - Description - 2.38 Volt - 0.50 Amp - B3-1/2 Krypton Single Contact Miniature Flanged (P13.5S) Base - C-2R Filament Design - 0.80 MSCP. - 15 Average Rated Hours - 1.25" Maximum Overall Length - 0.45" Maximum Overall Diameter. KPR2 Krypton Flashlight Replacement Bulb