The CD-i player 400 series, which includes the 450, 470, 490 models. The 400 models are slimmed-down units aimed at console and educational markets. The CD-i 450 player, for instance, is a budget model designed to compete with game consoles. In this version, an infrared remote controller is not standard but optional.
Source: Wikipedia, "CD-i", available under the CC-BY-SA License.