Mag-num Star 4-Cell C & D MAGLITE Krypton Bulbs for Alkaline Batteries Old new stock, packaging has yellowing. 1997 Model Number: LMSA401 Part Number: 107-000-193 4-CELL C & D MAG-NUM STAR® KRYPTON BULBS FOR ALKALINE BATTERIES This bulb was specifically designed for use with four C or D size alkaline batteries. Do not use rechargeable batteries. Whenever possible use Mag-Lite® parts and accessories to maximize the performance of this product.