In the previous paper, the authors focused on the Core-Products for innovative decision-making, and discussed about the framework to create the Core-Products. In fact, the timing and details of decision-making is very important to create product innovation based on the Core-Products. In this paper, an innovation target is discussed with Reverse-AHP (R-AHP) to specify details of innovative product. To illustrate the validity of the proposed method, a SONY's music player is taken as an example and analyzed.