Philips Babyphone Model - 469, 3 channels, AA, 12 h, Nickel-Metal Hydride (NiMH), 200 m, 9 V Philips Babyphone Model - 469. Channels quantity: 3 channels. Battery type: AA, Battery life (max): 12 h, Battery technology: Nickel-Metal Hydride (NiMH). Maximum operating distance: 200 m, Power requirements: 9 V