Super High Performance batteries at a Low price.Also known as R03, LR03, MN2400, UM4, 824, HP16. ULTRA Alkaline - Super High Performance. These batteries are designed for high drain applications e.g. Minidisc, Digital Camera, Portable TV. Used In Insulin Pump, Deltec Cozmo, MiniMed Paradigm.Compare these to Energizer or Duracell you will not be disappointed.GP Ultra Alkaline battery is especially formulated to meet the increasing demands of today's new generation of high power devices such as; PDAs, Digital Cameras, Remote Controlled Toys, Audio and other portable devices alike.